Rainbow Bike Tail Light MTB Bicycle Rear Light (Colour)

1. Material: PC
2. Size: 92 x 23 x 31mm
3. Battery: 3.7v / 750mah
4. Power: 0.5w
5. Run time: 6-10h
6. Weight: 49g
7. Charge way: usb 5v/1A
8. Waterproof level: IPX6
9. Charging instruction: red light when chaiging,no red light when fully charged.charging time is around 2.5h