Includes: F150 Flashlight, Rail Mount, Remote Pressure Switch, 1 CR2 Battery Materials: 6061 Aircraft Grade Aluminum Compatibility: Rifles with Picatinny Rail. Full-sized Rail Equipped Glock/1911/Springfield XD/ Sig Sauer. Light Intensity: 150 lm Weight: 3.7 oz Length: 3.4 in Color: Black Warranty: 1 Year Warranty The Monstrum F150 150 Lumens Flashlight is the newest in our family of best-selling tactical flashlights. At 150 Lumens, the light is powerful enough for outdoor environments as well as for home defense weapons. Designed specifically for use with rifles or shotguns, the flashlight mounts securely to standard Picatinny rail systems. The Monstrum F150 Flashlight comes equipped with: A powerful long-lasting 150 Lumens LED bulb for indoor or outdoor usage A rigid single piece design machined from aerospace 6061 grade aluminum A Picatinny rail mount with a Torx secured locking plate for attachment to standard Picatinny rail systems A detachable remote pressure switch that allows for operation without removing your hand from the barrel Requires one CR2 battery (included with purchase)