UTG Sub-compact Tactical Red Laser Sight with integral Picatinny mounting deck. Measures 1.14 inches in length and uses four LR48 batteries (included). Dual operating modes: Solid Dot and Pulse Dot with memory of last used mode. Constructed from aluminum with a black finish. Weight with battery: 1.16 oz. Wavelength: 640-660 nm; Laser Class: 3R; Output power: 2-4 mW. Beam range: up to 500 meters. Diameter: 1.26 inches. Mount type: integral Picatinny deck for diverse firearm applications.