Orion H40W-S 500 Lumens LED Tactical Flashlight with Strobe Mode, Rifle Barrel or Rail Mount, Remote Pressure Switch and Batteries Latest efficient CREE XP-G2 R5 bulb and produces 500 lumen brightness 3 level of light outputs and tactical Strobe mode Include regular forward switch, remote pressure switch, Offset rail mount and Battery Military Grade - Impact Proof and Waterproof