This product is made of aluminum alloy, and is waterproof and shockproof * The flashlight uses Luxeon 3 Watt LED bulb which can last up to 10,000 hours, and it is powered by 1pc high quality 4000mah rechargeable battery. * The light can be adjusted by rotating the zoom dimmer of the head, so you can use it in diffrent environments. * Anti-rolling design, easy to carry. * There are three kinds of light: strong light, dim light, and flash light.