[battery] one CR2032 battery or two CR2016 batteries
Packing: vacuum card, one pack
[applicable] mountain bike battery car road car folding car motorcycle
No need to change the circuit, just follow the wire on the wheel                 Can be; A wheel can be more than a card, multi-color combination effect more dazzling and cool!
[color] white (red, blue, green, colored)
[features] switch design, want to light up; Bright, both sides are bright, greatly improve the safety and waterproof performance of the vehicle.