1. Material: ABS, PET, TPR, electronic components
2. Functions: electronic watch, timing, three-speed wind speed, USB charging, soft strap
3. Rated voltage: 5V
4. Rated power: 2W
5. Wind speed gear: 3 gears
6. Operation method: mechanical
7. Built-in battery: 300mAh lithium battery
8. Three gears of wind speed, you can adjust freely
9. TPU soft rubber strap, more comfortable to wear
10. Product size: 6 x 3.6 x 28.5 cm
11. Weight: about 69 grams