•All Aluminum construction •532nm Green Laser Beam <5mw •Specially designed Weaver style mount with mounting tool •Momentary & constant on/off cap switch and coil pressure switch included •Powered by 1 CR123A Lithium Type Battery (included) •Dimensions (inches): 4.08L x 1.54W x 3.40H •Weight: 5.10 oz Extremely bright... 100+ Yards in daylight