Features:Material: High Quality BrassLaser Wavelength: 635-655nmLED Type: Visible Red LaserSighting Range: 10-80 yardsDot Size: 1.5" @ 100 ydsLaser Beam: <5 mWLength: 1.77" (45mm)Batteries: AG3Package Includes:1 x Laser Bore Sighter 4 x AG3 batteries( included )