D11D is a mini blacklight 365nm UV light pen flashlight specially designed for medical examination, medical inspection, pet urine stain detection, UV glue curing and EDC applications. Products Features: Excellent quality powerful South Korea 365nm SMD LED source provides as high as 3000mW output power, 78mW/cm radiant energy, high efficient energy saving, lifetime as long as 10,000 hours. Equips with toughened ultra-clear optical lens and textured orange peel plating reflector deep aluminum alloy cup to reinforce spotlight and strong beam, reduce stray flood visible light. Powered by 2* AAA excellent quality alkaline battery easy to obtain, extended runtime enable to continuously work for 6-8 hours @ high. High strength aerospace Aluminum alloy material and Mili-spec III hard-anodized surface treatment can resist 4.9 feet any direction impact and be anti-scrape, anti-abrasive, and anti-corrosive even in harsh environment. Intelligent chip circuit designs digital regulated current output and constant brightness, reverse polarity protection prevent from improper battery insertion. scientific structure and exquisite workmanship, O-ring and gasket sealed design apply with IPX-6 waterproof rate to resist on heavy rain or wave wash.