Bushnell Marine 7 x 50 Binocular with digital compass BaK-4 porro prisms for bright, clear, crisp viewing, Fully multi-coated optics, 100% waterproof/ fogproof O-ring sealed and nitrogen-purged to keep out moisture, highly resistant to saltwater corrosion Non-slip, non-skid rubber armor cushions bumps and shock, prevents sliding and provides a firm grip when wet Hermetically sealed, Fold-down eycps 100% UV protection