6 in overall length. Mitylite lamp module. Body made of unbreakable ABS with polycarbonate lens, submersible to 250 feet. Pre-focused Xenon lamp with an unsurpassed white light beam. Xenon lamp has 10,000 candlepower with 31.5 lumens and 3.66 watts. Takes 4-AA Alkaline batteries included. Includes with the light multi-function mounting clip, adjustable black lanyard and foam line battery contact.