In depth comparison and review of Amazfit T-Rex 2 and Xiaomi Redmi Watch 3. 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 | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | Zepp OS | - |
| Supported Host Device OS | iOS 12 or later, Android 7.0 (Nougat) or later | Android 6.0 (Marshmallow) or later, iOS 12 or later |
| Activity/Sport | Multisport | - |
| Wearing Style | Watch style | Watch style |
| Width | 47.1 mm | 36.56 mm |
| Height | 47.1 mm | 42.58 mm |
| Depth | 13.65 mm | 9.99 mm |
| Weight | 66.5 g | 37 g |
| Body Material | Polymer | - |
| Protection | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant | Water-resistant |
| Colours | - | Elegant black |
| Clock Display | Yes | Yes |
| FEATURES | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Sensors | Accelerometer, ambient light sensor, digital compass, gyro sensor, geomagnetic sensor, barometric altimeter, BioTracker PPG 3.0 biometric sensor | Accelerometer, geomagnetic sensor, optical heart sensor, blood oxygen sensor, gyroscope |
|---|---|---|
| Tracking Data | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation, sleep stages, stress level, menstrual cycle | Distance, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, stress level, breath, blood pressure, menstrual cycle |
| Modes | 150+ sports modes | 100+ Workout modes, do-not-disturb mode |
| Goal Setting | Yes | Yes |
| Features | 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 | Find phone function, answering a call, phone unlocking, automatic exercise recognition, SOS call, auto pause, music playback control, weather information, personalised Watch Faces, stopwatch timer, 10 preloaded running courses, brightness: 600 nits |
| Notifications | Missed calls, calendar, incoming calls, applications | SMS, Email, social apps, calls, sedentary |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | Vibration alert, visual interface |
| Navigation (GPS) | GPS receiver | GPS/GLONASS/Galileo/BeiDou/QZSS receiver |
| Payment Technology | - | Alipay |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Xiao Ai |
| CELLULAR | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Messaging Services | - |
|---|
| CONNECTIVITY | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Wireless Interface | Bluetooth 5.0 BLE | NFC, Bluetooth 5.2 |
|---|
| DISPLAY | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Type | AMOLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 454 x 454 pixels | 390 x 450 pixels |
| Screen Size | 1.39" | 1.75" |
| Pixel Density | 326 ppi | 341 ppi |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Type | Touch sensitive screen, touch buttons | Touch sensitive screen |
|---|
| CASE | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Case Size | - | 42 mm |
|---|---|---|
| Case Shape | Round | - |
| Case Details | Ember black | Wild green | Desert khaki | Astro black and gold | - |
| BAND | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Band Type | Strap | Strap |
|---|---|---|
| Fits Wrist with Circumference | 140-205 mm | 135-200 mm |
| Clasp Type | Buckle | Pin buckle |
| Band Material | Silicone | - |
| Band Colour | Ember black | Wild green | Desert khaki | - |
| BATTERY | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Technology | - | Lithium Ion |
|---|---|---|
| Capacity | 500 mAh | - |
| Battery Life | 24 day(s) | 12 day(s) |
| Battery Life Details | 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 |
Typical usage - up to 12 days Heavy usage - up to 7 days GPS + HR mode (Continuous reception) - up to 18 hour(s) |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | 2 hour(s) | - |
| MISCELLANEOUS | Amazfit T-Rex 2 | Xiaomi Redmi Watch 3 |
|---|
| Included Accessories | Magnetic charging dock | Magnetic charging cable |
|---|---|---|
| Preloaded Software | Zepp App | - |
| Compliant Standards | MIL-STD 810G | - |
| Max Depth of Water Resistance | 100 m | 50 m |
| Manufacturer Model Number | - | M2215W1 |
| Warranty | 1-year warranty | - |
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