Ade Advanced Optics Adjusted Rifle Scope Sight with 2 Mounts Tactical Laser Dot, Green Output: 1mw Length: 4.7''. Tube Diameter: 1'' Laser Wavelength: 532nm Advanced laser optics give a superb laser sight Adjustable windage and elevation Provide clear pointing dot even in day light and clear laser beam in the dark or low light Ade Advanced Optics one year USA warranty when purchased through authorized dealer.Lithium disposable battery ( Not included )