Anodized aluminum body finished by CNC Machine 1 watt LEDs, 10 times brighter than high-intensity LEDs(other led are available! Such as luxeon star led.) No bulb to burn out: 100,000 hour LED life Using collimator to focus the beam, Up to 25 Lumens Runs continuously for 5 hours on 2xAA,3XAAA,1XCR123A,2 X CR123A batteries, (Batteries non-included) Convenient push On/Off switch in the end taip O-ring sealed and water resistant Nylon holster are including DO NOT LOOK THE LED DIRECTLY WHEN IT IS ON. IT IS HARMFUL TO YOUR EYE.