Pentax Gameseeker 1.75x-5x 20mm Matte Scope 1.75x-5x 20mm riflescope with durable 1-piece, 1-inch tube construction Fully multicoated optics with PentaBright technology produce sharp, clear images Nitrogen-filled housing prevents internal fogging of optical elements Waterproof exterior handles inclement weather; 3 inches of eye relief Includes bullet-drop-compensating Precision Plex reticle; weighs 11.8 ounces