This torch Atex from Acculux (zone 1, 21) 4x batt (LR6) AA incl 170Lm 150m and is for explosion-proof application. This lamp is compact and strong and fits well in the hand. Acculux set the benchmark for environmentally-friendly lighting back in 1955 by developing the world's first rechargeable lamp. It was the first company to launch a rechargeable LED torch. Many professionals rely on this German global leader's quality.