Ni-Glo Glow Marker Crystal Clear - HS CODE - 7326200090  C.O.O. - EU Designed for marking equipment and personal property and for anything you may wish to locate in the dark.. Quickly recharges using sun or artificial light sources, torches, LED's, car headlamps etc. Glows for up to 10 hours in darkness. Power and battery free, purely physical process, with no chemical or radioactive reaction. Supplied with jointing and key ring clips for attachment and multiple use. Colour: Crystal Clear.