Fireflys RGB LED-Valve Cap

Make your board an absolute eye-catcher with Fireflys. These small valve caps are equipped with a rotation sensor and a brightness sensor. They only light up, when the wheel is rotating or when it's dark outside. 
Installing these puppies couldn't be easier: Remove old vlave caps, unpack fireflys and remove the transport safety from the battery, screw on the Fireflys and you're done.

Fireflys fit all car valves. Included in the packaging is an adaptor for most common bike valves.