Panther Vision PV-600 Flashlight 600 lm Flat Design Waterproof Shockproof CREE XM-L LED with 4 AA batteries, Black Revolutionary Patent Pending FLAT design: obsoletes the round flashlight, allowing you to carry it in a shirt or pants pocket comfortably Patent Pending HYPER-FIN Cooling Technology: disperses heat from the LED to prevent the flashlight from getting hot and extends LED life 6062 Aircraft Aluminum and Tactical Polymer Construction: extremely durable and SHOCKPROOF to 3 Meters (up to triple the competition)! CREE XM-L high performance LEDs: some of the brightest hand-held LED technology in the marketplace Waterproof: sealed high/low tactile switch and O-ring sealed plugs make these flashlights WATERPROOF to 1 Meter