BSA Laser Genetics ND3 laser Green laser with Rotary Optical Collimator Adjustable beam diameter & intensity Micro beam (smallest diameter) is visible up to 3 miles Larger-diameter beams illuminate trails or paint targets up to 250 yds away Water-resistant Nitrogen-filled to prevent fogging 1" tube (can be mounted on a gun) Battery has 7 hrs of continuous use Made of high-tech aluminum Anodized matte black finish 532nm laser 18mW output Class 2M Uses 1 CR123V lithium battery (included) 6.25"x1.25" 5.5 oz. 1-year manufacturer's warranty Includes 1 CR123A lithium battery, scope mount (fits 1" scope tube) w/windage & elevation adjustments, 3/8" & Weaver mounts, binocular/spotting scope mount (9.2mm to 6mm long; 1.25mm threads), remote momentary pressure switch, cleaning kit & padded carrying case Rated to take the 2-way recoil of airguns, including the harsh recoil of springers