Function: constant lighting,
flash:7 colors flash alternately,18 modes display automatically
Battery: 300mAh Li Battery
Installed diameter: less than 30mm, especially recommend for kids balance bike
Work time: 8-12 hours
Product size: 8.2*1.6cm
Mounting placement: wheel hubs No speed is required, will constant lighting when power on Installed in the center of the wheel, won’t affect the center of gravity of the bicycle.
Rechargeable Bicycle Wheel Light Bike Hub Spoke Light LED Cycling Spoke Light Hub Accessories for Boys, Girls, Adults, Cycling Gifts