Why is BT20 better than BT80?
- Water resistance5 ATM vs 2 ATM2.5×
- Pixel density331 ppi vs 304 ppi+9%
Why is BT80 better than BT20?
- Battery capacity350 mAh vs 1,000 mAh2.9×
- Screen size1.96″ vs 2.13″+9%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 53 mm |
| Thickness | — | 14.2 mm |
| Height | — | 52.7 mm |
| Width | — | 44.5 mm |
| Lens / cover glass | — | Tempered glass |
| Water resistance | 5 ATM | 2 ATM |
| Ingress protection | IP68 | — |
| Water resistance (IPx) | IPx8 | — |
| Military-grade (MIL-STD-810) | Yes | — |
| Colours | Black | Black, Titanium |
| Display | ||
| Screen size | 1.96″ | 2.13″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 410 px | 410 px |
| Resolution (height) | 502 px | 502 px |
| Pixel density | 331 ppi | 304 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 350 mAh | 1,000 mAh |
| Battery type | Li-Ion | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Sensors | Accelerometer, heart rate, SpO2 | Accelerometer, heart rate, SpO2, blood pressure, barometer, compass |
| Sports & navigation | ||
| Built-in GPS | No | No |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Connectivity | ||
| NFC payments | No | No |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Speaker | Yes | Yes |
| Platform | ||
| Operating system | Proprietary OS | Proprietary OS |
| Platform | Proprietary | Proprietary |
