Why is Gen2 better than Gen3?
Gen2 has no measurable advantages in this pair.
Why is Gen3 better than Gen2?
- Weight3 g vs 2.5 g+20%
Specifications
Side by side
| Design & durability | ||
| Weight | 3 g | 2.5 g |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | 10 atm / 100 m | 10 atm / 100 m |
| Battery | ||
| Battery life (smartwatch mode) | 10 days | 10 days |
| Health sensors | ||
| Blood oxygen (SpO2) | Yes | Yes |
| Skin temperature | Yes | Yes |
| Sensors | SpO2, accelerometer | SpO2, accelerometer |









