In depth comparison and review of Amazfit T-Rex Pro and OPPO Watch Free. 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 | OPPO Watch Free |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Supported Host Device OS | iOS 10 or later, Android 5.0 (Lollipop) or later | iOS 10 or later, Android 6.0 (Marshmallow) or later |
| Activity/Sport | Multisport | Indoor running, indoor walking, elliptical, 5-min workouts, fat burn running, outdoor walking, outdoor running, indoor rowing, endurance running, interval running, jogging |
| Wearing Style | Watch style | Watch style |
| Body Details | With band: 59.4 g | Case only: 20.9 g |
| Body Material | Polycarbonate | Glass fibre reinforced polycarbonate, PA + GF bottom case |
| Protection | Water-resistant, temperature protection, salt fog protection, freezeproof | Water-resistant |
| Colours | Desert grey | Black |
| Clock Display | Yes | Yes |
| FEATURES | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| 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, SpO2 sensor, 6-axis accelerometer, optical heart sensor, blood oxygen sensor, gyroscope |
|---|---|---|
| Tracking Data | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation | Distance, time, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, heart rate variability, snoring |
| Modes | - | 100+ Workout modes |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, event reminders | Call handling, find phone function, inactivity alert, alarm, timer, music playback control, weather information, AI smart watch face, sleep disturbance analysis |
| Notifications | SMS, incoming calls, applications | SMS, incoming calls |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo/BeiDou receiver | - |
| CONNECTIVITY | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| Wireless Interface | Bluetooth 5.0 | Bluetooth 5.0 BLE |
|---|
| DISPLAY | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| Type | AMOLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 360 x 360 pixels | 456 x 280 pixels |
| Screen Size | 1.3" | 1.64" |
| Pixel Density | - | 326 ppi |
| Colour Depth | - | 24-bit (16.7 million colours) |
| Screen Protection | Tempered glass | 2.5D curved glass |
| Always On Display (AOD) | Yes | - |
| INPUT DEVICE | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| Type | Touch sensitive screen | Touch sensitive screen |
|---|
| CASE | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| Case Shape | Round | Rectangular |
|---|---|---|
| Case Details | Meteorite black | Steel blue | - |
| BAND | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Width | 22 mm | 19 mm |
| Fits Wrist with Circumference | - | 130-205 mm |
| Changeable | - | Yes |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone rubber | Silicone |
| Band Colour | Meteorite black | Blue steel | - |
| BATTERY | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| Technology | Lithium polymer | Lithium Ion |
|---|---|---|
| Capacity | 390 mAh | 235 mAh |
| Battery Life | 18 day(s) | 14 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 14 days |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | 1.5 hour(s) | - |
| MISCELLANEOUS | Amazfit T-Rex Pro | OPPO Watch Free |
|---|
| Included Accessories | Magnetic charging dock | Magnetic charging dock |
|---|---|---|
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | 70 °C | - |
| Min Operating Temperature | -40 °C | - |
| Manufacturer Model Number | - | OWWE201 |
| Warranty | 1-year warranty | 2-year warranty |
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