BARSKA Red Laser Pistol Rifle Sight System Operating temperature: 41 - 95 degrees fahrenheit Class 3R/3a laser Mount: Weaver/Picatinny Maximum capacity: 1000 yards 5Mw high power green laser sight Class IIIA Laser Product, 5mW power output 5mW red laser Max. reach 500 yards Tube Diameter: 15mm Output Power: &lt;5mW Wavelength: 635-655nm Max Reach Capacity: 500 yds Adjustment Type: Allen wrench Warranty: Manufacturer 1 Year Limited Includes mount, Allen wrenches, and 3 lithium batteries