O-ring sealed and nitrogen purged, the Bushnell Trophy XLT 8 x 32 Binoculars are designed with waterproof and fogproof construction. These binoculars are made with fully multicoated optics with antireflective coating for bright, high-contrast images and up to 8x magnification. The soft-touch thumb grips provide easy handling, while the BaK-4 prisms offer sharp images, and the twist-up eyecups help avoid strain on your eyes. The Dura-Grip, rubber-armored housing delivers durability. Center focus for convenience.