For use in hazardous atmospheres, and waterproof IP 67 rating. Power source: 4 x ‘D’ cell Alkaline. Runtime: 150 hrs, Light output: 90 lumens, Safety Approvals: UL protection methods, UL 913 CSA C22.2, intrinsically safe, Divisions 1 & 2, Class I, II, III Div 1 Group A-G, Class I, II,III Div 2 Group A-G, Operating temp T5