The Nitecore NU05LE is a compact and strong signal lamp. It is powered by a rechargeable Li-Ion battery that can be charged with a micro USB connection. The signal lamp has a hook-and-eye band that can be easily attached to clothing, helmet or gear. With max. 20 lumen and four different colors, the lightweight signal lamp (22 g) is the perfect tool for outdoor tours in foggy or stormy conditions.