The National Geographic waterproof roof binocular is a must-have accessory for outdoor enthusiasts. Featuring 42mm aperture, fully multi-coated lenses, and improved Bak-4 prisms, this binocular delivers bright and rich images. The 8x magnification offers a close view of distant objects without affecting field of view. The waterproof and fogproof design improves reliability. | National Geographic 8 x 42 Waterproof Roof Binoculars