This Interactive lightsource uses the very latest in LED technology to make your fibre optics burst into life! Controlled by the user via a sleek wireless controller, the colour of the fibre optics can be changed at the press of a button. Controller uses Qi charging technology so no battery to change, simply place the unit on a pad to charge.Works with almost all fibre optics, please contact us if in doubt.This study product is very easy to clean and comes with a 3 year warranty.