Green Laser w/Mount/SwitchFeatures:- The Compact Green laser is an ultra bright and powerful green laser in a much smaller package than was available previously.- The Weaver style mount will fit virtually any Weaver and Picatinny rails, making it possible to fit onto a wide variety of firearms. - With precise windage and elevation adjustments, you will have a: quick, powerful, and precise laser aiming devise. - With the supplied remote pressure switch, it gives you the flexibility to mount the laser anywhere on your firearm and be able to activate the laser when you want to. - The laser is manufactured from aircraft quality anodized aluminum.Specifications:- Wavelength: 532 nm - Maximum Output Power: 5mW - Operating Voltage: 3V DC - Battery type: CR123A lithium (only one required) - Line Width: 0.1 nm - Beam Divergence: 1mrad - Beam diameter: 1 mm - Operation Current: 300mA - Operating temperature: 59 - 95 degrees Fahrenheit