Product description This keychain UV flashlight is compact and tony in size, designed to convenient to every day carry, make you can distinguish counterfeit money, ID card detection, even to repair your nail gel whenever and wherever. Product Features: Excellent 365nm UV light LED sources. Equips with toughened ultra-clear glass optical lens, more than 99% light transmittance. Latest plating technology aluminum alloy deep reflector cup 30% deeper than cheap flashlight enable to tight and strengthen the beams. High strength aerospace aluminum alloy casing and Mili-spec III hard-anodized anti-abrasive surface treatment, comfortable feeling in hand, anti-scrape, anti-corrosive and anti-slid. Excellent energy-saving, powered by 1*AAA alkaline battery, extended 1 hour runtime. Intelligent digital regulated current output and constant brightness. Reverse polarity protection design prevent from improper battery insertion. Limited 3 feet impact resistance and IP-65 waterproof and dirty proof. Important notes:This flashlight is a high-intensity black light UV lighting device capable of cause of eye damage to users or others, avoid shining directly to anyone's eyes.