3V LED flashlight long life,high lamp efficiency high color temperature,small power Applications1. Can be used in Zone 1 and Zone 2,groupIIA,IIB and IIC explosive atmosphere and Zone 20,Zone 21 and Zone22 flammable dust atmosphere.2.Temperature class:T1~T6.3. Indoor or outdoor(IP68).4. Can be used in the chemical, petroleum refining, petroleum exploitation, offshore platform, tankers, military ...