... ,Cheap price ,easy use Fashionable silicone led bicycle wheel light Specifications: 1,Product Size(mm): 45(L ... brightness :10000-12000MCD4,Power:2x CR2032 3V battery 5,Switch: push button on/off 6,Led life ... . 3,Can be mounted on handlebar, seat, helmet, wheel, hub, etc. 4,3 operating modes: Slow flashing ... mode (change mode by pre ssing the button) 5,Surface Color: Any color is available as to customer ...