Size: 29.5x28x93mm Brightness: 1000LUX Material/s: Aluminum Burn time: 12H Color: blue(available) Bulb type: 9-LED Color temperature: 6000~7000K This tactical LED flashlight with tail switch just may be the rugged ,most versitile and most useful lighting product you will ever own.Made of aircraft aluminum it is virtually indestrutible. And it is completely waterproof . Twist constant on/off or momentary tail cap switch.