High quality CREE Q5 3 Watt LED chip, output 260lm max. Special reflector design, enhance light output in intension and distance, up to 800 meters. Constand current / voltage circuit design, protect LED emitter from damage. Aluminume alloy case, avoid damage when drop off on ground. Using "O" ring, perfect performance on waterproof, can keep working underwater in 1 meter. With hanging ring on flashlight body, convenience to schlep. On/Off button, soft touch swift to different mode, easy operation. Light bulb type: CREE Q5 3W high power LEDWorking voltage: 3.6~4.2VLED Quantity: 1 pcsLighting distance: Up to 800m 3 mode: Low 90lmHigh 260lm Flash 150MHz Battery Type: 3 x AAA battery (not included)Body Material: Alumiun alloy Body Color: Black Size: 4.13 inch x 1.35 inchWeight: 110gram (not including battery)