The Nite Ize Radiant Microlight is an ultra-compact ultraviolet LED flashlight. Operating in the 365 to 400 nanometer wavelength range, it is ideal for detecting counterfeit bills, searching for contraband, and identifying bodily fluids at crime scenes. Its crush-resistant polycarbonate body features a multi-function pressure switch that provides access to two power settings, plus strobe and signal modes. It also snaps open and closed, making it easy to replace the pair of compact lithium batteries that power it through its lengthy 10 hour runtime. Its steel clip attaches easily to clothing or equipment for portability.