M-Tac glow stick is a completely self-contained light source that works without electricity and helps to illuminate dark places, mark a point or give a signal. The disposable tube can illuminate a small area for 24 hours after activation. Safe, non-toxic, and non-flammable chemical components are contained in a sealed case and can be stored for a long time without losing their properties. It is widely used in military practice, tourism, diving, and is also used as various kinds of backup lighting. Working time: 8 hours Dimensions: 4,5×40 mm