Bushnell 180825C PEKAK Bear Grylls 8 x 25mm Compact Roof Prism Waterproof/Fogproof Binoculars, Black 100% waterproof, O-ring sealed and nitrogen purged for reliable, fog-free performance Premium BaK-4 prisms and multi-coated optics offer crisp clear images with improved light transmission Non-slip rubber armor and Soft Texture Grip absorbs shock and provides a firm grip Compact and rugged; 8x magnification and 25mm objective Features twist-up eyecups and a large center-focus knob for easy adjustments; limited lifetime warranty