BARSKA 3x32 IR Compact Contour Duplex Riflescope Compact riflescope designed for crossbow hunters and sport shooters Range-finding duplex IR reticle with side-mounted click-stop rheostat knob Finger-click windage and elevation adjustment; smooth rear focus ring Long eye relief, fully coated optics, and 100-percent waterproof and shockproof housing 1-inch tube diameter; measures 8.5 inches long and weighs 14.81 ounces; lifetime warranty