The Mitylite™ is made of Xenoy/Polycarbonate unbreakable chemical resistant resin material. Its pre-focused Xenon modified spot beam is 600% brighter than ordinary lights. It can cut through smoke, fog and rain making it a perfect light source for all applications. Accidental turn on and mechanical switch failure is eliminated because of the rotary on/off switch. It includes 2-AA cell alkaline batteries and is water resistant (not for diving applications). You break it, we replace it... forever.