In depth comparison and review of Xiaomi Watch S1 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 | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | - | Zepp OS |
| Supported Host Device OS | iOS 10 or later, Android 6.0 (Marshmallow) or later | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | Multisport | Multisport |
| Wearing Style | Watch style | Watch style |
| Audio Input | Microphone | - |
| Audio Output | Speaker | - |
| Width | 46.5 mm | 47.1 mm |
| Height | 46.5 mm | 47.1 mm |
| Depth | 11 mm | 13.65 mm |
| Weight | 52 g | 66.5 g |
| Body Material | Stainless steel | Polymer |
| Protection | Water-resistant | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Sensors | Accelerometer, ambient light sensor, barometer, gyro sensor, geomagnetic sensor, pulse oximeter, 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, blood oxygen saturation, stress level | 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 | Call handling, automatic exercise recognition, breathing training function | 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 | SMS, Email, social apps, incoming calls | Missed calls, calendar, incoming calls, applications |
| Vibrating Alert | - | Yes |
| Feedback Type | Vibration alert, visual interface | Vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo/BeiDou/QZSS receiver | GPS receiver |
| Internet of Things (IoT) Compatible | Yes | - |
| IoT Intelligent Assistant | Alexa built-in | - |
| IoT Voice Controlled | Direct | - |
| CONNECTIVITY | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Wireless Interface | IEEE 802.11b/g/n, NFC, Bluetooth 5.2 | Bluetooth 5.0 BLE |
|---|
| DISPLAY | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Type | AMOLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 466 x 466 pixels | 454 x 454 pixels |
| Screen Size | 1.43" | 1.39" |
| Pixel Density | 326 ppi | 326 ppi |
| Screen Protection | Sapphire glass | - |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Type | Touch sensitive screen, push buttons | Touch sensitive screen, touch buttons |
|---|
| CASE | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Case Size | 46 mm | - |
|---|---|---|
| Case Shape | Round | Round |
| Case Details | Silver | Black | Ember black | Wild green | Desert khaki | Astro black and gold |
| BAND | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Band Type | Strap | Strap |
|---|---|---|
| Fits Wrist with Circumference | - | 140-205 mm |
| Changeable | Yes | - |
| Clasp Type | Buckle | Buckle |
| Band Material | Calf leather | Silicone |
| Band Colour | Brown | Black | Ember black | Wild green | Desert khaki |
| BATTERY | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 470 mAh | 500 mAh |
| Battery Life | - | 24 day(s) |
| Battery Life Details | Power saving mode - up to 24 days Typical usage - up to 12 days |
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) |
| Wireless Charging | Yes | - |
| MISCELLANEOUS | Xiaomi Watch S1 | Amazfit T-Rex 2 |
|---|
| Included Accessories | USB cable, wireless charging dock, fluororubber watch strap (grey) | Magnetic charging dock |
|---|---|---|
| Preloaded Software | - | Zepp App |
| Compliant Standards | - | MIL-STD 810G |
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | 45 °C | - |
| Min Operating Temperature | -10 °C | - |
| Warranty | 2-year warranty | 1-year warranty |
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