Dimensions
Size comparison
BT80Watch 2
| BT80 | Watch 2 | Difference | |
|---|---|---|---|
| Height | 52.7 mm | 47.5 mm | +5.2 mm |
| Width | 44.5 mm | 45.9 mm | −1.4 mm |
| Thickness | 14.2 mm | 11.8 mm | +2.4 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is BT80 better than Watch 2?
- Screen size2.13″ vs 1.43″+49%
- Battery capacity1,000 mAh vs 495 mAh2×
Why is Watch 2 better than BT80?
- Built-in GPSNo · BT80: Yes
- Water resistance2 ATM vs 5 ATM2.5×
- NFC paymentsNo · BT80: Yes
- Thickness14.2 mm vs 11.8 mm+20%
- Resolution (width)410 px vs 466 px+14%
- Pixel density304 ppi vs 326 ppi+7%
Specifications
Side by side
| Design & durability | ||
| Case size | 53 mm | 48 mm |
| Weight | — | 36.8 g |
| Thickness | 14.2 mm | 11.8 mm |
| Height | 52.7 mm | 47.5 mm |
| Width | 44.5 mm | 45.9 mm |
| Case material | — | Aluminium |
| Lens / cover glass | Tempered glass | — |
| Water resistance | 2 ATM | 5 ATM |
| Colours | Black, Titanium | Black, Silver |
| Display | ||
| Screen size | 2.13″ | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 410 px | 466 px |
| Resolution (height) | 502 px | 466 px |
| Pixel density | 304 ppi | 326 ppi |
| Peak brightness | — | 600 nits |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 1,000 mAh | 495 mAh |
| Battery type | — | Li-Po |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Sensors | Accelerometer, heart rate, SpO2, blood pressure, barometer, compass | Accelerometer, gyro, compass, barometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | No | Yes |
| Dual-band GPS | — | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Connectivity | ||
| NFC payments | No | Yes |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Wi-Fi | — | Wi-Fi 5 |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Storage | — | 32 GB |
| RAM | — | 2 GB |
| Platform | ||
| Operating system | Proprietary OS | Android Wear OS |
| Platform | Proprietary | Android |
| Chipset | — | Qualcomm Snapdragon W5+ Gen 1 |
