The Trek Star UV is an ultra bright white & UV LED headlamp. The UV LED is specially designed for finding scorpions, detecting fraudulent currency, passports and IDs, criminal analysis, and hunting. At less than half the weight of ordinary headlamps and multi-mode capability, our Smart Memory Mode technology remembers your mode preference. The Trek Star withstands temperatures between -25 ℃ to 60℃ (-13℉ to 140℉). It is the perfect choice for outdoor and special usage.