output power: 5mW wavelength: 630-680nm size: approx. 25.6 mm in barrel diameter, 115 mm long color: black compact size windage and elevation adjustment adjusted by switching the 2 knobs (remove head cover & adjust the knobs with allen wrench) high grade alumium construction includes remote pressure switch and cap switch operated by 1 x CR123A battery (INCLUDED) weaver mount:20mm Weaver mount suitable for Weaver 20mm Rail fits most weaver/RIS/picatinny rails With "8" figured mount for Laser 1"(25.4mm) and Scope 1"(25.4mm)