| key specs |
| Strap Colour | Black, Green, Yellow, Gold | - |
| Ideal For | Unisex | Unisex |
| Compatible OS | - | iOS, Android |
| Strap Material | - | Silicone |
| Dial Shape | - | Round |
| Display Type | - | AMOLED |
| general |
| Brand | Xiaomi | Amazfit |
| Model | Mi Band 8 | T-Rex Pro |
| Release date | April 18, 2023 | March 23, 2021 |
| Model Number | M2239B1 | - |
| Dial Colour | Black | Desert Grey, Meteorite Black, Steel Blue |
| Strap Colour | Black, Green, Yellow, Gold | - |
| Touchscreen | 1.62 | Yes |
| Interchangeable Strap | Yes | - |
| Water Resistant | 5 ATM | 10 ATM |
| Usage | Regular | - |
| Ideal For | Unisex | Unisex |
| Model Name | - | Amazfit T-Rex Pro |
| Dial Shape | - | Round |
| Strap Material | - | Silicone |
| Size | - | Regular |
| Dial Material | - | Polycarbonate |
| dimensions |
| Width | 22.5 | 47.7 |
| Height | 48 | 47.7 |
| Thickness | 10.99 | 13.5 |
| Weight (g) | 27.00 | 59.40 |
| product details |
| Sensor | optical heart rate and blood oxygen sensor, six-axis motion sensor | Three-axis acceleration sensor, Heart Rate Sensor, BioTracker 2 PPG , ambient light sensor, Geomagnetic, three-axis gyroscope, barometric altimeter |
| Battery Type | 190mAh | - |
| Battery Life | 16 days | 18 days |
| Charge Time | 1 hour | 1.5 hours |
| Rechargeable Battery | Yes | Yes |
| Compatible Device | - | Android, iOS |
| Notification | - | Yes |
| Charger Type | - | Magnetic 2-pins Pogo Pin |
| connectivity features |
| Call Function | No | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.0 |
| Wi-Fi | - | Yes |
| GPS | - | Yes |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Altimeter | Yes | Yes |
| Compass | Yes | - |
| Calendar | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Chronograph | Yes | - |
| Date & Time Display | Yes | Yes |
| Language | Simplified Chinese, Traditional Chinese, English | English |
| Number of Buttons | - | 4 |
| Other Fitness Features | - | 100+ sports modes |
| Other Watch Functions | - | Heart rate monitoring, sleep quality monitoring |
| platform and storage features |
| Operating System | - | RTOS |
| Compatible Operating System | - | iOS, Android |
| camera and display features |
| Display Resolution | - | 320x360 |
| Display Type | - | AMOLED |
| Scratch Resistant | - | Tempered Glass + anti-fingerprint coating |
| audio and video features |
| Speaker | - | Yes |