Durable rubber sleeve on barrel, gives user thermal insulation, comfort and a firm grasp Battery canister in barrel can handle several battery sizes Lens made of glass, gasket-sealed
Streamlight ProTac HL 4 High Lumen Tactical flashlight with 3 preset brightness levels. In high, the ProTac HL 4 provides a blinding 2,200 lumens - maximum beam range of 1,135 feet. This versatile tactical light runs on two rechargeable li-ion batteries or four CR123 primary lithium batteries. Also, the ProTac HL 4 has Streamlight's TEN-TAP programmable switch.