Polar Grit X
Tech specs 
SizeDevice Dimensions: 47 x 47 x 13 mm
S: wrist circumference 130-190 mm. M/L: wrist circumference 145-215 mm.
MaterialExtreme high strength stainless steel case. Glass fibre reinforced polymer back cover.
ChargingUSB
Battery346 mAh Li-pol battery
Battery lifeup to 40 h in training mode (GPS and wrist-based heart rate) or up to 7 days in standard watch mode. Power saving options available.
Water-resistanceWR100 (down to 100 m)
Weight64 g with wristband, 44 g without wristband.
SensorGPS/GLONASS, accelerometer, heart rate, barometer
DisplayAlways-on colour touch display. Laminated Gorilla glass lens with anti-fingerprint coating, protected with extruded stainless steel bezel with lugs
Screen size1.2 inches (resolution 240 x 240 pixels)
ColorsMultiple
OtherPLATFORM: Propriatory
PROCESSOR: N/A
MEMORY: N/A
CONNECTIVITY: Bluetooth Low Energy.
Activity tracking 
StepsYes
DistanceYes
Calories burnedYes
ActivityYes
FloorsYes
SleepYes
Heart rateYes (Polar Precision Prime)
Stress & recoveryTraining Load Pro (cardio load, muscle load, perceived load) / Recovery Pro
Pulse Ox
Respiration rate
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
GPSGPS, GLONASS
Running featuresRunning Power from the wrist, speed, distance, cadence, altitude, HRmax, Heart Rate zones, Speed/Pace zones, Power zones, ZonePointer
Swimming featuresDetects your heart rate, swimming style, distance, pace, strokes and rest times. Distance and strokes get tracked also in open water swimming.
Other - Hill Splitter
- FuelWise™ smart fueling assistant
- Route guidance
- Route planning with Komoot
- Weather
- supports over 130 different sports
- Nightly Recharge™ – See how well you recover from your day during the night.
- FitSpark™ daily training guide – Get ready-made daily workouts that match your recovery, readiness and training history.
- Serene™ breathing exercise – Relax your body and calm down your mind with the help of a guided breathing exercise.
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected pay
LTE
Links 
Affiliate link*Amazon | Polar
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