The functional Zoom LT1 LED tactical flashlight is powered by 3 x AAA 1.5V or 1 x 18650 battery (batteries not included). The body of the flashlight is made of aircraft grade aluminium and the surface of the flashlight is non-slip. The high power at such small dimensions is due to the latest XML diode technology. The flashlight has an adjustable beam angle, and a white light colour.The on/off switch allows you to easily select one of four light modes: full power medium power Strobe SOS Specifications: Model: LT1 LED type: XM-L LED lifetime: ~100.000h Zoom function: Yes - convex lens Light output of the large flashlight: 1800 lumens Light temperature: 5300-6300K Operating modes: 100% / 50% / 25% / strobe / SOS Range of light beam: ~150m Power supply: 3 x AAA 1.5V or 1 x 18650 (batteries not included) Material: aircraft aluminium Water resistance: IPX4