Cree LED, high light of torch for police, public using. Working voltage: 4.5VRunning life: HI:15.3H Low:22.3H ... Flash:19.3HBattery: AAA alkaline battery * 3LED lamp: CREELED lamp life: 100,000 hoursFunction: rapid zooming/ high-light/ low-light/ ... underwater Size: 105* ¢34.6mmWeight: 136g(including batterys) Patent Led Flashlight,Led Torch,Cree Led.Germany technology (CE,Rohs,1 year of guarantee)