In depth comparison and review of Polar Grit X and Amazfit T-Rex Pro. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Supported Host Device OS | iOS, Android | iOS 10 or later, Android 5.0 (Lollipop) or later |
| Activity/Sport | Multisport | Multisport |
| Wearing Style | Watch style | Watch style |
| Body Details | With band: 64 g Case only: 44 g |
With band: 59.4 g |
| Body Material | Stainless steel | Polycarbonate |
| Protection | Waterproof | Water-resistant, temperature protection, salt fog protection, freezeproof |
| Colours | - | Desert grey |
| Clock Display | Yes | Yes |
| FEATURES | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Sensors | Digital compass, barometer, altimeter, heart rate | Ambient light sensor, 3-axis gyro sensor, geomagnetic sensor, barometric altimeter, 3-axis accelerometer, BioTracker 2 PPG biological tracking optical sensor |
|---|---|---|
| Tracking Data | Distance, speed, calories burned, activity, heart rate, steps taken, pace, sleep stages, cadence, running power, swimming metrics, running index | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation |
| Goal Setting | Yes | Yes |
| Features | Fitness test, VO2 max, inactivity alert, alarm, Serene (breathing exercise), weather information, Nightly Recharge recovery measurement, FitSpark training guide, FuelWise smart fueling assistant, Hill Splitter, Route guidance, Route planning with Komoot, Energy sources | Music remote handling, event reminders |
| Notifications | SMS, Email, incoming calls | SMS, incoming calls, applications |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | - |
| Navigation (GPS) | GPS/GLONASS/Galileo/QZSS receiver | GPS/GLONASS/Galileo/BeiDou receiver |
| CONNECTIVITY | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Wireless Interface | Bluetooth | Bluetooth 5.0 |
|---|
| DISPLAY | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Type | Colour | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 240 pixels | 360 x 360 pixels |
| Screen Size | 1.2" | 1.3" |
| Screen Protection | Corning Gorilla Glass (scratch resistant glass) | Tempered glass |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Type | Touch sensitive screen | Touch sensitive screen |
|---|
| CASE | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Crystal Type | Laminated Corning Gorilla Glass | - |
|---|---|---|
| Case Shape | Round | Round |
| Bezel | Stainless steel | - |
| Case Details | White/silver | Black DLC | Silver | Meteorite black | Steel blue |
| BAND | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Size | S | - |
| Band Width | 22 mm | 22 mm |
| Fits Wrist with Circumference | 130-190 mm | - |
| Changeable | Yes | - |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone rubber |
| Band Colour | White | Black | Green | Meteorite black | Blue steel |
| BATTERY | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Capacity | 346 mAh | 390 mAh |
| Battery Life | 7 day(s) | 18 day(s) |
| Battery Life Details | Watch mode - up to 7 days Training mode - up to 40 hour(s) |
Typical usage - up to 18 days Heavy usage - up to 9 days GPS mode - up to 40 hour(s) |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 1.5 hour(s) |
| MISCELLANEOUS | Polar Grit X | Amazfit T-Rex Pro |
|---|
| Included Accessories | USB charging cable | Magnetic charging dock |
|---|---|---|
| Compliant Standards | MIL-STD 810G | - |
| Max Depth of Water Resistance | 100 m | 100 m |
| Max Operating Temperature | 50 °C | 70 °C |
| Min Operating Temperature | -20 °C | -40 °C |
| Warranty | 2-year warranty | 1-year warranty |
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