MC-E LED 2300 Lm 40m Diving light *3 50,000h lifespan Cree MC-E M LED *Max 2300 luminous flux output cool white 6800k color temperature *Max 50h runtime *6 12V working voltage *Powered by 2*32650, 6*17670 / 18650 / 18700, 12*CR123A(3.0V), *4*17670 / 18650 / 18700 or 8*CR123A for emergency substitution *power. *Head magnetic ring switch, preset 3 modes except O: *O— Off / H—High / M—Medium / L—Low *6061 durable aircraft aluminium alloy, anti-abrasive, scratch-free and *shock-proof toughened ultra-clear glass lens *Double waterproof O ring 50m deepwater diving design *Type III anodized processed *Constant current circuit, constant brightness *500m high efficiency anti-coating OP reflector *275mm length x 50mm body x 108mm head moderate size *1.56kg net moderate weight *Strap, specification, standby O ring, XTAR WP6 charger kit and 6 XTAR 18700-2400mAh Li-ion batteries included