In depth comparison and review of Amazfit T-Rex Pro and Fitbit Versa 4. 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 Pro | Fitbit Versa 4 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Supported Host Device OS | iOS 10 or later, Android 5.0 (Lollipop) or later | Android 10 or later, iOS 13.4 or later |
| Activity/Sport | Multisport | - |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Audio Output | - | Speaker |
| Width | - | 40.5 mm |
| Height | - | 40.5 mm |
| Depth | - | 11.2 mm |
| Body Details | With band: 59.4 g | - |
| Body Material | Polycarbonate | - |
| Protection | Water-resistant, temperature protection, salt fog protection, freezeproof | Water-resistant |
| Colours | Desert grey | - |
| Clock Display | Yes | Yes |
| FEATURES | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Sensors | Ambient light sensor, 3-axis gyro sensor, geomagnetic sensor, barometric altimeter, 3-axis accelerometer, BioTracker 2 PPG biological tracking optical sensor | Ambient light sensor, altimeter, SpO2 sensor, 3-axis accelerometer, optical heart sensor, vibration motor |
|---|---|---|
| Tracking Data | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation | Distance, calories burned, activity, sleep activity, heart rate, steps taken, pace, stress level, menstrual cycle, Resting Heart Rate (RHR), breathing rate, sleep quality score |
| Modes | - | 40+ sports modes |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, event reminders | Find phone function, VO2 max, Heart Rate Variability (HRV) monitoring, HR zones, automatic exercise recognition, smart Wake-Up, Active Zone Minutes, guided breathing session, Always-on display, Sleep Score, Sleep Profile, Stress Management Score, Daily Readiness Score |
| Notifications | SMS, incoming calls, applications | SMS, incoming calls, applications, high and low heart rate |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo/BeiDou receiver | GPS/GLONASS receiver |
| Payment Technology | - | FitBit Pay |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| CONNECTIVITY | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Wireless Interface | Bluetooth 5.0 | NFC, Bluetooth 5.0 |
|---|
| DISPLAY | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Type | AMOLED - colour | Colour |
|---|---|---|
| Resolution | 360 x 360 pixels | - |
| Screen Size | 1.3" | - |
| Screen Protection | Tempered glass | - |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen |
|---|
| CASE | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Case Size | - | 40 mm |
|---|---|---|
| Case Shape | Round | Square |
| Case Details | Meteorite black | Steel blue | Copper rose | Graphite | Platinum |
| BAND | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Size | - | S/L |
| Band Width | 22 mm | - |
| Fits Wrist with Circumference | - | Up to 209 mm |
| Changeable | - | Yes |
| Clasp Type | Buckle | Pin-and-tuck |
| Band Material | Silicone rubber | - |
| Band Colour | Meteorite black | Blue steel | Pink sand | Black | Waterfall blue |
| BATTERY | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Capacity | 390 mAh | - |
| Battery Life | 18 day(s) | 6 day(s) |
| Battery Life Details | Typical usage - up to 18 days Heavy usage - up to 9 days GPS mode - up to 40 hour(s) |
Typical usage - up to 6 days GPS mode - up to 12 hour(s) |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | 1.5 hour(s) | 2 hour(s) |
| MISCELLANEOUS | Amazfit T-Rex Pro | Fitbit Versa 4 |
|---|
| Included Accessories | Magnetic charging dock | Charging cable, 6-month Fitbit Premium membership, wristband (129 - 175 mm), wristband (158 - 209 mm) |
|---|---|---|
| Preloaded Software | - | Google Maps, FitBit Pay, Google Wallet |
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | 70 °C | 45 °C |
| Min Operating Temperature | -40 °C | -10 °C |
| Warranty | 1-year warranty | 2-year warranty |
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