For use on Beretta Nano This Item Includes: LaserMax CenterFire Red Laser Sight - 1/3 N Lithium Battery - LaserMax 1 Year Warranty Red laser with constant beam Custom designed to fit the Beretta Nano Pistol Mounts to the frame without changing out parts or altering your weapon Sits just under the bore for pinpoint accuracy; Class IIIa Laser Product: &lt;5mW power output Class 3R Laser Product (Does not exceed Class IIIA emission limits), &lt;5mW power output