Specially designed for outdoor hiking; Working time: 200 hours (low brightness), 2h (high brightness); Standby time: 6000 hours (1 x 18650); Slip control, can operate with one hand; Built-in li-ion battery, micro USB charging port; Lighting range: 100 degree; Built-in temperature sensor and smart temperature control program, safe, stable and reliable; Adopts high efficient constant circuit; Film-plated optical lens; made of aerospace aluminum alloy, surface is hardened treated; Head band is made of nylon, comfortable and breathable; Waterproof grade: IPX8; Drop-proof: 1.5m; Can be placed vertically