Dimensions
Size comparison
GT1BT103
| GT1 | BT103 | Difference | |
|---|---|---|---|
| Height | 53.9 mm | 49.5 mm | +4.4 mm |
| Width | 51.9 mm | 40 mm | +11.9 mm |
| Thickness | 13.2 mm | 10.9 mm | +2.3 mm |
| Weight | 92 g | 100 g | −8 g |
Drawn to the same scale from the official dimensions (front and side).
Why is GT1 better than BT103?
- Built-in GPSYes · BT103: No
- SpeakerYes · BT103: No
- Weight92 g vs 100 g+9%
- Pixel density461 ppi vs 260 ppi+77%
- Battery capacity480 mAh vs 300 mAh+60%
- Resolution (width)466 px vs 320 px+46%
Why is BT103 better than GT1?
- Screen size1.43″ vs 1.91″+34%
- Thickness13.2 mm vs 10.9 mm+21%
Specifications
Side by side
| Design & durability | ||
| Case size | 54 mm | 50 mm |
| Weight | 92 g | 100 g |
| Thickness | 13.2 mm | 10.9 mm |
| Height | 53.9 mm | 49.5 mm |
| Width | 51.9 mm | 40 mm |
| Lens / cover glass | Panda Glass | Tempered glass |
| Water resistance | 5 ATM | — |
| Colours | Black | Black, White |
| Display | ||
| Screen size | 1.43″ | 1.91″ |
| Display technology | LCD | LCD |
| Panel | TFT LCD | TFT LCD |
| AMOLED / OLED display | No | No |
| Resolution (width) | 466 px | 320 px |
| Resolution (height) | 466 px | 380 px |
| Pixel density | 461 ppi | 260 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 480 mAh | 300 mAh |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Sensors | Accelerometer, heart rate, SpO2, barometer, compass | Accelerometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | No |
| Dual-band GPS | Yes | — |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Connectivity | ||
| NFC payments | No | No |
| LTE (cellular) | No | No |
| eSIM | No | No |
| Bluetooth | 5.3 | 5.2 |
| Smart features | ||
| Speaker | Yes | No |
| Platform | ||
| Operating system | Proprietary OS | Proprietary OS |
| Platform | Proprietary | Proprietary |
