Glovion Update Version Super Bright 20 Pcs LED Bike Bicycle Cycling Wheel Spoke Light 4 Color Option (1 Package for One Wheel) Steady, flash two work modes changed by switch button 20 pcs led ,length of lighting srting is 2 meters, Make Your Wheels Glow with Circle of Spinning Light Work with 3*AAA battery(not included), continuously flassh time up to 50 hours update version, waterproof design, easy to operate, suitable for most bicycle Package content : 1 x Wheel Spoke Light