Bike LED lights for safe night riding. Goes straight on stem of bike. It will light up when tire turns.

　　Colorful play of light, really energy conserving!

　　When your wheels start to move, they instantly flash brighten developing a strong disk of light that appears to hover above your wheels. When you stop they will certainly switch over off to conserve battery power.

　　Cost is for a set of 2, one for the front and one for the back tire.