In depth comparison and review of Polar Unite and Amazfit T-Rex 2. 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 Unite | Amazfit T-Rex 2 |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Operating System | - | Zepp OS |
| Supported Host Device OS | iOS, Android | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Width | 43.4 mm | 47.1 mm |
| Height | 43.4 mm | 47.1 mm |
| Depth | 10.4 mm | 13.65 mm |
| Weight | 32 g | 66.5 g |
| Body Material | Fibreglass reinforced polymer | Polymer |
| Protection | Water-resistant | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Polar Unite | Amazfit T-Rex 2 |
|---|
| Sensors | Accelerometer, ambient light sensor, optical heart sensor | Accelerometer, ambient light sensor, digital compass, gyro sensor, geomagnetic sensor, barometric altimeter, BioTracker PPG 3.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, calories burned, activity, sleep activity, heart rate, steps taken | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation, sleep stages, stress level, menstrual cycle |
| Modes | - | 150+ sports modes |
| Goal Setting | Yes | Yes |
| Features | Fitness test, Bluetooth Smart technology, inactivity alert, GPS via mobile, guided breathing session, Nightly Recharge recovery measurement, FitSpark training guide | Camera remote control, find phone function, flashlight, alarm, realtime location tracking, weather information, event reminders, PAI Health Assessment System, pomodoro timer, stopwatch timer, PeakBeats workout status algorithm, OxygenBeats algorithm, ExerSense algorithm, SomnusCare, Dual-band navigation |
| Notifications | Calendar, SMS, Email | Missed calls, calendar, incoming calls, applications |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | - | GPS receiver |
| CONNECTIVITY | Polar Unite | Amazfit T-Rex 2 |
|---|
| Wireless Interface | Bluetooth | Bluetooth 5.0 BLE |
|---|---|---|
| Connectors | USB | - |
| DISPLAY | Polar Unite | Amazfit T-Rex 2 |
|---|
| Type | IPS - colour | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 204 pixels | 454 x 454 pixels |
| Screen Size | - | 1.39" |
| Pixel Density | - | 326 ppi |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Polar Unite | Amazfit T-Rex 2 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, touch buttons |
|---|
| CASE | Polar Unite | Amazfit T-Rex 2 |
|---|
| Case Shape | Round | Round |
|---|---|---|
| Case Details | - | Ember black | Wild green | Desert khaki | Astro black and gold |
| BAND | Polar Unite | Amazfit T-Rex 2 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Size | S/L | - |
| Band Width | 20 mm | - |
| Fits Wrist with Circumference | 130-210 mm | 140-205 mm |
| Changeable | Yes | - |
| Clasp Type | Snap & slip | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | Black | Blue | Pink | White | Ember black | Wild green | Desert khaki |
| BATTERY | Polar Unite | Amazfit T-Rex 2 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 174 mAh | 500 mAh |
| Battery Life | - | 24 day(s) |
| Battery Life Details | Watch mode + HR - up to 4 days Training mode + HR - up to 50 hour(s) |
Typical usage - up to 24 days Battery safe mode - up to 45 days Heavy usage - up to 10 days Accurate mode (with GPS) - up to 26 hour(s) Balanced mode (with GPS) - up to 50 hour(s) Power saving mode (with GPS) - up to 58 hour(s) Ultra-low temperature (with GPS) - up to 10 hour(s) Ultra-low temperature (without GPS) - up to 9 days |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | Polar Unite | Amazfit T-Rex 2 |
|---|
| Included Accessories | Charging/data cable | Magnetic charging dock |
|---|---|---|
| Preloaded Software | Polar Fitness Test, Polar Flow | Zepp App |
| Compliant Standards | - | MIL-STD 810G |
| Max Depth of Water Resistance | 30 m | 100 m |
| Max Operating Temperature | 50 °C | - |
| Min Operating Temperature | -10 °C | - |
| Warranty | 2-year warranty | 1-year warranty |
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