Bushnell 157050C H20 7X50 WP/FP Porro Binocular w. Watch & Knife & Accessories 100% waterproof, O-ring sealed and nitrogen purged for reliable, fog-free performance 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 7x magnification and 50mm objective diameter offer a huge field of view and an ideal magnification for long-range viewing Large center-focus knob for easy adjustments; Twist-up eyecups