A couple of weeks ago, we wrote about a HYROX Warsaw promo video from Amazfit Poland that appeared to show an unannounced Balance-style watch. At the time, the design looked close to the Balance 2, but the case architecture was different enough to raise questions.

A few days ago Zepp Health posted this teaser on their social media channels.

The new regulatory material now adds more detail to that earlier sighting and the teaser. We are, however, missing the final retail name.

The HYROX watch now looks like A2553

The watch shown in the HYROX Warsaw clip had a familiar round display and general Balance-like proportions, but the surrounding case did not look like the standard Balance 2. It had a more angular frame, more pronounced lugs, screw-like details around the top and bottom and a more rugged case-to-strap transition.

That is where today’s FCC filing gets interesting. The drawing for Amazfit model A2553 shows a large round watch sitting inside an angular outer structure, with the same kind of reinforced shape seen in the HYROX image. Looking through both side by side, to us this looks like the same device.

The HYROX image also shows a rotating crown at the upper right. The filing drawing is more technical and does not read like a consumer render, so it does not clearly explain the controls. But the overall case geometry lines up well enough to connect the two.

The filing gives us proper hardware clues

The documents identify the device as a production unit. So this does not look like an early concept floating around inside a marketing department. The confidentiality clause on the full FCC filing runs out in six months, so we should see the watch before then.

A2553 has a 780mAh cell, which sits above the 700mAh battery in the T-Rex 3 but below the 870mAh one in the T-Rex Ultra 2. So this is not small-watch territory. It looks more like a bigger premium fitness watch, which fits the chunky HYROX design we saw earlier. Hence the emphasis on “BIG” in the teaser image.

Connectivity includes Bluetooth and 2.4GHz Wi-Fi. The antenna documentation also covers receiver ranges around 1170MHz to 1180MHz and 1570MHz to 1580MHz, which points towards dual-band GNSS support. The filing does not spell out the final positioning feature set, so that should be treated as a strong hardware clue rather than a finished product claim.

The size points to something above a standard Balance

The drawing gives us a few useful size clues. The watch appears to have a 45mm display, while the widest measured span across the outer case structure is 51.73mm. That makes sense when you look back at the HYROX clip, where the device looked broader and more built-up than the regular Balance 2.

It’s worth noting that these are mechanical or antenna-related references rather than retail case dimensions. The safer takeaway is that this is a large round watch with a wider angular shell around it.

This also explains why the earlier HYROX watch looked slightly odd at first glance. It was not just a Balance 2 with a different watch face. The case itself appears to be different, with a more protective outer frame and a more engineered strap connection.

The retail name is still the missing piece

The filing does not give us the final marketing name, so that part remains open. But the HYROX tie-in may be the clue.

Zepp Health has been leaning into HYROX as a fitness partnership and a more rugged Balance-style edition would fit that direction. The watch could end up as a special edition, a Pro-style variant or a fitness-focused version of Balance 2 with different casing and hardware tweaks. Or perhaps even a part of the T-Rex range.

The earlier HYROX Warsaw clip now looks less like a one-off promo image and more like an early public glimpse of real hardware. With the company teaser and now FCC material adding battery, connectivity, GNSS and size clues, we have a clearer picture of what Zepp Health has been preparing.

This article originally appeared on Gadgets & Wearables, the first media outlet to report the story.

Source: FCC

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You can check all the current Isinwheel offers here.

The power option up front

The Isinwheel GT1 Dual Motor Off Road Electric Scooter 1600W is the one that leans into power. You get two 800W motors, a 48V 13Ah battery and a quoted range of up to 35 miles. It sits on 10 inch all terrain tyres and supports up to 330lbs, so it is clearly built for more than short city hops. This thing is aimed at riders who want stronger acceleration and a bit more confidence on uneven ground.

The 6% discount code ISW6% applies here, and it runs for a long time. What’s more, right now the scooter is selling for £569 on the site, down £190 from its usual price. So quite a big drop.

A middle ground scooter

The Isinwheel GT2 Pro Off Road Electric Scooter 1200W sits between the two. It runs a 1200W motor and adds a removable 48V 15Ah battery, which is probably its most useful feature day to day. The quoted range is 37 miles and charging takes around 5 to 7 hours, so it edges slightly ahead of the GT1 on range while trading off some motor output.

That removable battery makes a difference if you do not want to move the whole scooter just to charge it. It also makes it easier to top up indoors, which can matter depending on where you store it. It uses the same ISW6% code as the GT1. Right now this one is selling for £539 on the site, down from the usual £799.

The ebike stands apart

The Dremax Commuter Ebike is a sensible part of the Isinwheel. It uses an 864W motor paired with a 720Wh Samsung battery, with a claimed range of up to 93 miles. That number depends heavily on how you ride, but even with real world variation it is clearly built for longer trips and daily use.

Bigger 27.5 inch tyres and the ebike format make it more suited to commuting and mixed terrain rather than quick bursts. It should feel more stable over distance, especially compared to standing on a scooter for longer rides.

The Dremax gets a simple £70 discount with the Dremax70 code. This is in addition to the £200 off the price it is selling right now (£1,199 down from £1,399).

Another ebike worth considering

Those three described so far are the current hot sellers. But there is another device in the mix that is also on sale.

The Isinwheel U4 Foldable Step-thru Electric Bike 500W is down to £439 from £629, which puts it in budget territory for a folding ebike. The 6% discount code ISW6% applies here, as well.

The U4 is a bit different from the Dremax. It is lighter, more compact and built around convenience rather than long range riding. You get a 500W motor and a quoted range of up to 55 miles, which is enough for shorter commutes and everyday errands without needing something as large as a full size ebike.

I recently reviewed the U4 and it comes across as a very accessible entry point into electric bikes. The folding step through frame makes it easy to store and carry, which is a big part of its appeal if you are tight on space or mixing transport modes. It is not trying to compete with higher end models on power or battery size, but it does not need to.

In day to day use, the focus is clearly on simplicity. It is the kind of bike you can just hop on without overthinking settings or modes. That makes it a solid option for casual riders or anyone who wants something straightforward for getting around, especially at the current discounted price.

You can check all the current Isinwheel offers here.

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The timing makes sense. Early firmware updates often shape how a device feels out of the box, and this one leans heavily into running features. That lines up with how Amazfit positions the Cheetah line, and it gives a clearer idea of what the watch is trying to be from day one.

A strong focus on structured training

The biggest additions sit around guided training. Hybrid Training is now part of the package, offering structured plans aimed at improving performance while managing injury risk and long term consistency.

Lactate threshold also makes an appearance, along with testing tools. That shifts the watch further into performance territory. This is a feature that debuted with Active 3 Premium, but has since rolled out to a bunch of other devices.

Official marathon plans are included as well, and there is support for third party platforms like TrainingPeaks. That opens the door to more serious training setups.

The addition of a Training Calendar ties this together. It shows upcoming workouts in a more organised way, which sounds simple but makes a big difference when you are following a schedule over several weeks.

Tools that go beyond basic tracking

A few smaller additions fill in the gaps around daily training. Equivalent Pace is now available, adjusting uphill efforts into a flat ground equivalent. It helps make sense of hilly runs without manually interpreting splits.

Race Time Prediction also joins the list. It estimates finishing times for different distances based on recent performance. These predictions are common across higher end sports watches, so it is good to see Zepp Health getting in on the fun.

Equipment Management is another addition that may not get much attention at first, but it can be useful over time. Tracking mileage on shoes and gear helps with rotation and replacement for runners.

Navigation and mapping improvements

The update also touches route planning and navigation. Off course alerts are said to be more sensitive, and turn notifications come through more quickly. That should make following routes feel a bit more reliable, particularly in urban environments or complex trails.

Map visuals get an upgrade as well, with richer terrain detail and improved contour accuracy. It is not a complete overhaul, but it points to incremental improvements that matter during actual use rather than on a spec sheet.

Other changes

Outside of sports features, the default screen on time is extended to 15 seconds. This reduces the need to constantly wake the display during workouts or general use.

Sleep tracking has been refined through algorithm changes.

Local music and podcast support is now available globally, removing regional limitations that were present before. That makes the feature more consistent regardless of where the watch is used.

There is also a mention of Launcher 2.0 improvements, aimed at making navigation smoother. Combined with general bug fixes and performance tweaks, the update should help the watch feel more stable overall.

Source: Amazfit Discord channel

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That battery figure is what makes this launch stand out. For a mainstream smartwatch, 35 days is a big claim, and it suggests Honor is pushing this model heavily around endurance. The official pre-order poster also shows a familiar round design, so the focus looks to be more on what is happening under the hood than a dramatic visual revamp.

Battery life takes centre stage

Battery life has become one of the easiest ways for smartwatch brands to separate themselves, especially as many full-featured watches still need charging every few days. Honor appears to be going in the opposite direction with the Watch 6 Plus.

The company says the watch can last up to 35 days on a charge. It has not yet explained what usage conditions apply to that number, so it is worth being cautious. These figures often depend on light use, reduced notifications or limited GPS activity. Still, even with that usual fine print, the number is high enough to grab attention.

It may also be the strongest battery claim Honor has made for one of its smartwatches so far. Earlier reports had already hinted that this model would carry the brand’s biggest smartwatch battery pack yet, although the actual battery capacity is still unknown.

That creates an interesting position for the Watch 6 Plus. Instead of chasing the thinnest design or the brightest display headline, Honor seems to be putting battery life right at the front of the pitch.

Sports features are getting more attention

The teaser points to advanced running exercises. Which suggests Honor wants this watch to appeal to more serious fitness users rather than only casual smartwatch buyers.

There is also a dedicated badminton mode mentioned in the material. Regional popularity often shapes these choices, and badminton remains a major activity category across Asian markets.

Earlier leak reports also mentioned broader upgrades to fitness tracking, with smarter workout data and expanded sports modes expected. Those details are still not fully confirmed, but the running focus now looks official enough to take seriously.

Heart health features are being teased

Honor is also talking about professional heart health care and expert support. The wording is still vague, so there is not much point in stretching that into firm conclusions yet.

Earlier leaks suggested possibilities such as continuous blood pressure monitoring and early cardiac warning alerts, but those features have not been directly confirmed by the official teaser. For now, the safer reading is that Honor is preparing stronger health monitoring tools, but the exact feature list still needs to be revealed.

What we still do not know

There is still no official launch date, although earlier reports point to a May release window. Pricing is also still under wraps, and that matters just as much as the battery claim. Honor usually plays in the more affordable end of the smartwatch market, so this one is unlikely to be too hard on your wallet.

There are also gaps around display specs, materials, GPS setup, charging speed and battery size. Those details usually decide whether a watch is competing with entry-level models or aiming much higher.

For now, Honor has done enough to make people pay attention. A 35-day claim is not the kind of number that gets ignored, especially when paired with clearer fitness ambitions.

Via HuaweiCentral

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Workout settings get a proper redesign

The biggest visible change is how workout settings are organised. Zepp Health has removed the old “training assistant” and “more” sections and merged everything into one new workout settings page. Alerts, data pages, auto pause, auto lap, targets, loaded weight, screen lock and 3D data are now grouped in one place. Up to now they’ve been split across multiple menus.

There are also several new controls. Always on Display, text to speech, pause button behaviour and Do Not Disturb during workouts can now be configured separately for each sport profile. So you can keep the screen always on during outdoor running, for example, but disable it for strength training or another session where you do not need it.

Better support for navigation and routes

Navigation also gets several additions. New options like “Explore nearby” and “Create out and back route” are now easier to access. Route tools are also available directly from the workout map screen.

When you open the map during a workout and press the menu button, there is now a dedicated navigation section. From there, you can quickly access saved routes, your current location, back to start, nearby exploration and round trip route creation without leaving the workout.

There is also a new navigation data class inside workout data pages. This includes fields like remaining distance, climb and descent to the next point, along with remaining ascent and descent to the final destination.

These only work when following a loaded route, which makes sense. If you are just recording a normal activity without navigation, the watch has no way of knowing what terrain is ahead.

Zepp Health has also cleaned up some wording in this area. Labels like “direction to start” and “forward path” have been renamed to clearer terms such as “starting point.”

New tools for runners and heart rate tracking

Outdoor Run and Trail Run now support more equivalent pace metrics, including grade adjusted pace options. Users can add current lap GAP, last lap GAP and incline adjusted pace fields to their data screens.

Heart rate zones also get a more visual update. During workouts, users can now enable a heart rate zone arc, a coloured curved indicator that shows the current zone live on screen.

VO2 Max calculations are also supposed to be more accurate after this update. This was a common frustration before, so this fix could matter more than it sounds.

A few more bits and pieces

Rowing machine workouts now support connection to third-party rowing machines. After connecting metrics such as power and distance can be shown.

There are also smaller additions like a new toggle for watch face status indicators. This lets users decide whether icons for background workouts, timers or stopwatches appear at the top of the main watch face.

For HIIT, HYROX, hybrid and cross training in AMRAP mode, timer duration now extends to 99 minutes instead of the previous 60. That gives a lot more room for longer structured sessions.

And that’s pretty much it. Version 4.8.3.5 looks like a genuinely useful update. Especially for people who rely heavily on training profiles and route navigation rather than just basic fitness tracking.

via

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Reading between the lines

Garmin did not mention CIRQA by name in the earnings call, and that is not surprising. Companies rarely preview trademarked products before they are ready. But management repeatedly pointed to “advanced wearables” and strong demand in Fitness. Also mentioned were new products, which is exactly where something like CIRQA would fit.

“As strong as our product line currently is, we are planning to launch even more new products throughout the year, including some that represent new categories for Garmin.”

CIRQA is not a normal smartwatch trademark. The filing describes it as a body-worn sensor system connected to recovery from physical and emotional stress, alertness levels and performance. That sounds much closer to a screenless recovery wearable than a traditional sports watch.

“I think we typically release somewhere around 100 new products a year, and we would expect that 2026 is in line with that, if not slightly stronger as we look at some new things.”

Think less Forerunner and more a platform that competes with recovery-focused products from companies like Whoop. But with Garmin’s own approach to training readiness, sleep, stress and long-term performance.

Muscle Battery may be the second piece

The other clue is the Muscle Battery trademark, which appeared not long before CIRQA. The filing points to analysis of muscle oxygen saturation, or SmO2, which usually needs dedicated sensing rather than something a standard wrist watch can handle accurately on its own.

Garmin does not currently have a native device built around this kind of metric. Body Battery focuses on overall energy and recovery using heart rate variability, sleep and stress data from its watches. Muscle Battery sounds much more specific. It points toward muscular readiness, fatigue and training strain measured at a deeper physiological level.

That makes it easier to picture as a separate body-worn device or dedicated sensor that works alongside an existing Garmin watch. It would add another layer of performance data, feeding muscle-specific insights into the wider Garmin training and recovery system.

Garmin’s Q1 results show where the momentum is

Garmin started 2026 with strong numbers, reporting total revenue of $1.54 billion for the first quarter, up 11% year over year. Profitability also improved, with operating income rising and margins staying healthy across the business.

Outdoor, Marine and Aviation were important contributors, but the message from the earnings call was clear. Fitness continues to be one of Garmin’s most dependable engines for growth, and it is expected to play a major role through the rest of 2026.

Garmin also maintained its full-year guidance, which suggests confidence that this momentum will continue rather than fade after one strong quarter. Despite strong earnings, the stock dipped slightly after the release. That usually means investors were looking for either even stronger forward guidance or more aggressive commentary about the rest of 2026.

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The image itself is pretty straightforward. “7 Days” is the number of days until launch, while the line “Not All Change is Loud” is probably a wink at the built in vibration motor, still the feature that makes Gen 3 stand out most from the previous version.

May 5 is the real update

Back in January, RingConn showed off Gen 3 at CES 2026 and talked through the main upgrades, but there was one thing missing, an actual launch date. That left the whole thing feeling more like an early preview, and a summer release looked more likely.

Instead, the company is moving faster. May 5 means Gen 3 is landing sooner than expected, which is good news for anyone who held off buying Gen 2.

This teaser is not about revealing something new. It is just RingConn putting a proper date on the calendar and reminding people what the headline feature is before launch day arrives.

The rest we already know

Most of the Gen 3 story was already covered back in January. RingConn said the ring would bring more than 13 days of battery life, expanded sizing from 6 to 15, new finishes and blood pressure trend tracking.

That blood pressure feature is not exclusive to Gen 3. It is also available for Gen 2, and owners can already access it by downloading the beta version of the smartphone app. So it is being treated more as a wider platform feature than a reason on its own to upgrade.

The built in vibration motor is the one change that actually alters how the ring behaves day to day. Instead of just tracking data in the background, Gen 3 can get your attention directly through silent haptic alerts. That opens the door to things like wake up alarms, reminders or simple health prompts without relying on a phone or making noise. It sounds small, but on a device you wear all the time, that kind of subtle feedback could end up being one of the most useful additions.

There is, of course, the question of how polished the vibration feature feels in real life. Adding haptics sounds great on paper, but it only matters if the alerts are actually useful and not something people switch off after two days.

Price, availability

RingConn says pre-sale begins on May 5th and ends on May 29th. During that time you will be able to grab 10% off the selling price. Check it out on their website.

Standard Models

• Black / Bright Gold / Bright Silver
• Regular Price: $349
• Pre-sale Price (10% OFF): $314.10

Brushed Models

• Brushed Silver / Brushed Rose Gold
• Regular Price: $369
• Pre-sale Price (10% OFF): $332.10

The company is also sticking with its no-subscription model. In a smart ring market where monthly fees are becoming more common, RingConn keeps pushing the simpler pitch, buy the ring once and use the features without paying again every month.

This article originally appeared on Gadgets & Wearables, the first media outlet to report the story.

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Instead of premium titanium models packed with smartwatch extras, most of the top finishers showed up with lightweight, practical training watches built for one job: running well. Garmin Forerunner watches appeared on both men’s and women’s winners, while COROS and even Samsung also made the list.

Garmin Forerunner watches steal the spotlight

The biggest takeaway is probably the dominance of Garmin’s Forerunner line. Tigst Assefa was clearly wearing the Forerunner 255 during her record-breaking run. Sabastian Sawe’s watch is less clear, with some discussion now around whether he wore the same model or the more affordable Forerunner 55.

Either way, the bigger point remains the same. Garmin has much newer and much more expensive watches available, but the fastest runners in the world are still choosing lightweight, practical training watches over premium flagships.

The Forerunner 255 itself skips the AMOLED display and premium materials you get on higher-end devices like the Forerunner 965 or Fenix line. What it offers instead is low weight, excellent GPS accuracy, strong battery life and reliable training tools, which is exactly what matters during a marathon.

If Sawe was wearing the Forerunner 55, that would push the idea even further. It is one of Garmin’s more affordable running watches, focused almost entirely on core training features rather than advanced analytics or premium design.

For elite runners, comfort matters more than luxury. A lighter watch is easier to forget about over 42.2 kilometres, especially when every gram starts to count late in the race.

That is probably why Garmin’s simpler Forerunner models continue to show up on professional athletes. They do the core job extremely well.

COROS continues its elite running push

COROS also had a strong showing. Yomif Kejelcha, who finished in 1:59:41, was seen wearing the Pace 3, while Hellen Obiri wore the Pace 4 during her 2:15:53 finish.

This fits with COROS’s strategy over the past few years. The company has focused heavily on performance runners rather than general smartwatch buyers, and its Pace series reflects that. These watches are light, simple and built around training metrics instead of lifestyle features.

The Pace line has developed a strong following among serious runners because it offers a lot without unnecessary extras. London Marathon results like this only strengthen that image.

The Samsung surprise

The most unexpected watch in the group was probably Jacob Kiplimo’s Samsung Watch 8. Seeing a Galaxy Watch on the wrist of a runner producing a 2:00:28 marathon is not something most people would have predicted.

Samsung watches are usually seen as smartwatches first and sports watches second. They handle notifications, apps and daily lifestyle features very well, but they are not the first choice most marathon purists think of.

That makes Kiplimo’s choice interesting. It could be linked to sponsorship, personal preference or simply the fact that the latest Galaxy Watch models have become much stronger fitness devices than people give them credit for. Either way, it stands out in a field dominated by dedicated running brands.

What elite runners actually care about

One thing is very clear from this lineup. There were no bulky adventure watches, no ultra-premium titanium showpieces and no devices chosen mainly for smartwatch appeal.

Instead, the focus stayed on watches that disappear on the wrist. Reliable GPS, stable heart rate data, long battery life and low weight matter far more than bright displays or premium finishes.

Joyciline Jepkosgei’s Garmin Forerunner 955 fits that same pattern. It offers more advanced training tools than the lower-end Forerunners, but it is still built first and foremost for performance.

That is probably the best lesson from this year’s London Marathon. The world’s fastest runners are not necessarily choosing the most expensive watches. They are choosing the ones they trust when everything depends on the next step.

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Suunto Core 2 shows up in certification documents

Suunto Core 2 now looks very real. We spotted an FCC filing for model OW245 which includes a product label that clearly carries the name “Suunto Core 2″. This is about as direct as these things get before an official announcement.

The filing describes the product as an outdoor watch under the Suunto brand. That lines up with what the Core name has always represented. This is not a general smartwatch line, or at least it has not been historically. Core has always been about outdoor basics, with altimeter, barometer, compass and weather tools at the centre of the experience.

The original Suunto Core dates back to 2007. It became one of the company’s best known non-GPS outdoor watches. It never chased modern smartwatch features, which was part of the appeal. You bought it because it did the outdoor watch thing without pretending to be a phone on your wrist.

That is why this filing is interesting. Suunto could have retired the name completely and left the rugged outdoor segment to watches such as Vertical and Race. Instead, the company appears to be preparing a proper follow-up to one of its most recognisable models.

The label tells us quite a bit

The FCC label gives away more than just the name. It shows water resistance of 100m, a CR3032 battery, stainless steel and the model number OW245. It also includes FCC, IC, CE, UKCA, EAC and KC markings, which points to a broader international launch rather than a tiny regional experiment.

The battery detail is probably the most important one. A CR3032 is a replaceable coin-cell battery, not a rechargeable lithium pack. That strongly suggests Core 2 is not trying to become a smaller Suunto Vertical or a full GPS sports watch.

That matters because it tells us something about the product philosophy. Suunto seems to be keeping the Core idea intact. Long battery life, low maintenance and outdoor functions appear to matter more here than apps, AMOLED screens and daily charging routines.

The 100m water resistance is another useful clue. Older Core models were not always seen as serious water watches, despite their outdoor credentials. A 100m rating would make Core 2 more capable around swimming, wet weather and rougher outdoor use.

The stainless steel marking also helps. It most likely refers to the caseback, based on the label design, although the filing does not confirm the full case material. Even so, it points to a more robust build than a simple plastic-only outdoor watch.

Bluetooth changes the formula

The RF report confirms Bluetooth LE in the 2402MHz to 2480MHz range. That is an important difference from the classic Core experience, which was essentially standalone and self-contained.

Bluetooth does not automatically mean a smartwatch. It probably means Suunto app pairing, settings sync, firmware updates and possibly some basic phone-linked features. It may also allow the watch to sync logs or outdoor data without turning into a full training watch.

A good comparison might be a modern Casio Pro Trek style product rather than a Garmin Fenix alternative. The value would sit in the mix of outdoor tools, replaceable battery and rugged design. Bluetooth would bring it into the current Suunto ecosystem without changing what the watch is for.

September could be the key date

According to the filing, the confidentiality period runs until September 2026. Once that period expires, more detail can become public unless Suunto extends confidentiality or launches the product before then.

Suunto has strong modern sports watches, but not everyone wants maps, training load, heart rate sensors, AMOLED screens or charging cables. Some people just want a tough outdoor watch that can sit in a drawer, go on a trip and still be ready.

This article originally appeared on Gadgets & Wearables, the first media outlet to report the story.

Source: FCC

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Fast forward to 2026 and the product looks very different. In/Out has moved well beyond that original single-device setup into a full v4.0 system with Net Devices, Line Devices, multiple sport support and years of software updates that have made the whole thing feel much more practical.

In the original review, one of the main attractions was simplicity. You clipped the device onto the net post, connected it to your phone and suddenly your local tennis match had a touch of Hawk-Eye style technology. It was fun, useful and definitely something that got people talking on court.

But there were obvious limits. Asking one device sitting at the side of the net to judge everything was always ambitious. Accuracy depended heavily on positioning and calibration, and while the idea worked, it still felt like an early version of something that needed more refinement.

From one gadget to a proper court system

That is probably the biggest difference today. In/Out is no longer really selling one gadget. It is selling a court setup.

The company now uses Net Devices and Line Devices. Net Devices still sit on the net posts and handle the main match operation, while Line Devices sit directly along the lines they monitor. In/Out describes them as the equivalent of chair umpires and line umpires, which is actually a very good way to explain it.

This solves one of the obvious weaknesses from the original product. A device looking straight down a baseline has a much better chance of making an accurate call than one trying to judge everything from the side. In/Out says these Line Devices help deliver millimetre accuracy, and for amateur matches it recommends using two Net Devices and two Line Devices, particularly for baseline coverage.

Compared to the version I tested in 2017, this feels far less like a clever gadget experiment and much more like a serious officiating system.

Hardware has matured

My early review focused on a much simpler hardware package. Since then, In Out has gone through multiple generations including v1, v2, v3 and now v4.0.

Version 3.0 introduced support for a third middle camera on the Net Device, which expanded both video capture and match analysis. It also improved net-related tracking by separating serve net faults from rally net faults, something the original system could not handle nearly as well.

Version 4.0 takes things further with a dedicated app flow, clearer device pairing and support for a much more modular setup. One v4.0 device can now work with multiple Line Devices, and the whole system is positioned not just for tennis, but also pickleball and badminton. Also, now there’s no screen on the device itself – instead it all works through your smartphone.

Software did most of the real work

Looking back at the original review, the concept was already strong. What the product really needed was reliability.

That seems to be where most of the work happened. In/Out’s own changelog says there have been 75 software releases and five hardware generations over eight years, which tells you this was not a product left sitting after launch.

Updates improved camera speed, Line Device communication, calibration, ball detection and overall call consistency. There were fixes for cases where devices disagreed with each other, better automatic recalibration after movement and fewer false detections.

One feature I particularly like is the “Too Close To Call” alert. Instead of pretending every call is perfectly certain, the system can now flag when a decision falls inside the margin of error. That feels much more honest and much more useful for real tennis.

Back in 2017, the discussion was often whether the technology could work. Now the focus is more about how smoothly it works in practice.

The app matters much more now

When I first tested In/Out, the app was mostly there to support the device. Today it’s a much bigger part of the product.

The v4.0 app handles umpiring, stats, camera views, replays and video recording. It can record from the phone or device view, stream matches and save videos directly to the smartphone. That makes it far more useful for coaching sessions and match review, not just line calls.

Stats have also grown. Training zones, player positioning and better Line Device stats all make the system feel less one-dimensional than before. It is still not trying to replace professional broadcast-level analytics, but it offers far more than the original “was it in or out?” use case.

Still not for everyone

One thing has not changed much. This is still a specialist product.

The current v4.0 pricing costs around $499 for one Net Device and two Line Devices. That means it is still aimed more at serious players, coaches and clubs than someone playing casual doubles once a week. But that was always the reality. Even in 2017, the value was strongest for people who played regularly enough to care about accuracy, video review and structured training.

You can also opt just for the Net Device for $299. Plus, there’s a special promotion with free shipping until May 8th for Europe. No customs fees or import duties guaranteed, too.

Looking back at that original review, the core idea was right. Tennis players hate bad line calls and love any tool that removes arguments. The difference now is that the product is far more complete.

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The post In/Out tennis line calling has come a long way since our 2017 review appeared first on Gadgets & Wearables.