Emergency Explosion-proof Double Head Lamp · BM044, 3W power output, compatible with 220V voltage, built-in 1.2V Ni-Cd battery with 1.5-hour emergency runtime; dimension 25043240mm. With reliable explosion-proof performance, its dual-head design ensures wider lighting coverage, easy to install, ideal for emergency lighting in flammable and explosive hazardous locations such as gas stations, chemical plants and mines.