Led bulbModeVoltageCurrentBatteryLumensRunning timeCree XR-E Q5One/high3.0~18V1A3*C230~2507~8 hrsCree XM-L T6One/high2.8~4.5V1.5A3*C500~5505~6 hrsCree XM-L T6One/high2.8~4.5V2.8A3*C800~8503~4 hrs Accessory: Wrist strapSize: 208mm(length) x 46mm(head dia.) x 32mm(tube dia.) x 35.5mm(tail dia.)Net weight: 370gPacking: Normal white paper box Features:1/ Cree led with lifespan over 50,000 hrs.2/ Made of aircraft-grade aluminum with hard anodized finish/ black color , vacuum coating aluminium reflector + Ultra clear tempered glass;3/ Rotary switch on the neck part;4/ Waterproof: IP-685/ Anti-roll, slip-resistant body design; Appliation: Scuba diving, underwater light, catching fishes / marine animals in the sea/river.