Garmin Fenix 6/6S/6X
Tech specs 
Size6: 47 x 47 x 14.7 mm
6s plus: 51 x 51 x 14.9mm
6x plus: 42 x 42 x 13.8mm (6S)
MaterialBezel Material - stainless steel, titanium or diamond-like carbon (DLC) coated titanium 
Case material - fiber-reinforced polymer with metal rear cover.
Strap material - silicone, leather, titanium or nylon
ChargingUSB / Solar (for 6X Pro Solar Edition)
BatteryLithium-ion
Battery life6: Smartwatch: Smartwatch: up to 14 days, GPS: up to 36 hours, Max battery GPS mode: up to 72 hours, Expedition GPS mode: up to 28 days, Battery saver watch mode: up to 48 days
6 Pro/Sapphire: Smartwatch: up to 14 days, GPS: up to 36 hours, GPS and music: up to 10 hours, Max battery GPS mode: up to 72 hours, Expedition GPS mode: up to 28 days, Battery saver watch mode: up to 48 days
6s: Smartwatch: up to 9 days, GPS: up to 25 hours, Max battery GPS mode: up to 50 hours, Expedition GPS mode: up to 20 days, Battery saver watch mode: up to 34 days
6S Pro/Sapphire: Smartwatch: up to 9 days, GPS: up to 25 hours, GPS and music: up to 6 hours, Max battery GPS mode: up to 50 hours, Expedition GPS mode: up to 20 days, Battery saver watch mode: up to 34 days
6X Pro/Sapphire: Smartwatch: up to 21 days, GPS: up to 60 hours, GPS and music: up to 15 hours, Max battery GPS mode: up to 120 hours, Expedition GPS mode: up to 46 days, Battery saver watch mode: up to 80 days
6X Pro Sollar; Smartwatch: up to 21 days +3 days, GPS: up to 60 hours +6 hours, GPS and music: up to 15 hours +1 hour, Max battery GPS mode: up to 120 hours +28 hours, Expedition GPS mode: up to 46 days +10 days, Battery saver watch mode: up to 80 days +40 days
Water-resistance10 ATM
Weight58-93 g (depending on model chosen)
SensorAccelerometer, optical heart rate sensor, barometric altimeter, electronic compass, GPS, GLONASS. PulseOX
Display240 x 240 pixels (6S); 260 x 260 pixels (6) 280 x 280 (6X); sunlight-visible, always-on, low power, colorful display
Screen size6: 1.3" (33.02mm) diameter
6S: 1.2” (30.4 mm) diameter
6X: 1.4" (35.56mm) diameter
ColorsComes with interchangeable bands in various colors.
OtherPLATFORM: Proprietory
PROCESSOR: N/A
MEMORY: 32/64GB (depending on model)
CONNECTIVITY: Bluetooth, WiFi
Activity tracking 
StepsYes
DistanceYes
Calories burnedYes
ActivityYes
FloorsYes
SleepYes
Heart rate24/7
Stress & recoveryYes
Pulse OxYes
Respiration rateYes
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
GPSGPS and GLONASS enabled
Running featuresVirtual pacer, VO2 max estimate, recovery advisor, race predictor, running dynamics, calculates distance for indoor workouts, personal records, virtual partner/racer
Swimming featuresPool swim metrics (lengths, distance, pace, stroke count/rate, calories), Stroke type detection (freestyle, backstroke, breaststroke, butterfly), Swim efficiency (SWOLF), drill logging, pool swim workouts.
Other - outdoor recreation, golf and cycling features
- Physiological measurements: Vo2Max, Training Status, Training Load, Recovery Time, Training Effect, Heat and altitude acclimation, Training load focus, Primary benefit (Training Effect labels) and more.
- Body Batter Energy Monitor
- Incident detection
Non-fitness functions 
Smartphone notificationsYes. The ability to directly reply to messages with predefined texts
On-board music storageup to 2,000 songs (Pro and Sapphire editions), up to 500 songs (Solar edition)
Connected payYes
LTE
Links 
Affiliate link*Amazon | Garmin
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