This flashlight is ETLus and MSHA listed Intrinsically Safe Permissible. It uses an LED rated at 160 lumens that works in conjunction with a high-efficiency deep parabolic reflector to create a usable flashlight beam rated at 180 meters. The single body switch provides momentary or constant-on functionality. Power comes from 3 AA (not included). NightStick®, XPP-5420G, FlashLight, Series: XPP, 160 Lumens, Focused Beam, 50000 hr Average Life, AA Battery, 3 Batteries, Green, Polymer Housing Material, IP67 Enclosure, 1.8 in Dia x 7 in L Dimensions