Bushnell Marine 7X50 Binoculars with Illuminated Compass - Blue - A classic marine bino with internal rangefinder and illuminated 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 100% UV protection