KEENSTONE LED Tactical Picatinny Flashlight 800 Lumen with Rail Mount Flashlight specifications: Up to 800-Lumen Reaches 400m Material: 6061T Aluminium IPX4 Rating Water-Resistant LED Light Source: Light Mode: High-Low-Strobe Batteries:2 x CR123A (included) Quick Release Offset Mount Fit for 25mm Flashlight Can be installed on Standard Picatinny Rail Installs in Seconds Fully adjustable with nuts & screws included.