Leupold BX-4 Pro Guide HD Full-Size Binoculars - 10x42 - The open bridge design and durable aluminum body is both comfortable to hold and lightweight enough for easy carrying. The redesigned body armor has a texture that allows for a sure grip in any conditions, with or without gloves. Completely waterproof and backed by the Leupold Full Lifetime Guarantee, the BX-4 Pro Guide HDs are a welcome addition for all who want to see more outdoors. Absolute waterproof and fog proof integrity, ready for a lifetime in the field, in all conditions. Delivers a perfectly round exit pupil with virtually no edge distortion and a crisp, clear image. Ergonomic design ensures a slim, lightweight, and fits well in your hands. Fully multi-coated lens system ensures maximum brightness for clarity, contrast, and color fidelity. High-definition, calcium-fluoride lenses ensure incredible clarity at all magnification levels. Open bridge, roof prism design is extremely lightweight and ergonomic. Phase coated roof prisms significantly increase resolution for a sharp sight picture from edge-to-edge of the visual field. Features twist-up eyecups and generous eye relief for comfortable extended viewing. Weight: 28.5 oz Length: 6.6 in Exit Pupil - High: 3.9mm Eye Relief - High: 16mm Close Focus Distance: 10ft Max magnification: 10 Objective size: 42 Angular FOV (degrees) - High: 5.0 Linear FOV (ft/1000 yd) - High: 263 Interpupillary Distance Range: 58-74 100% waterproof and fog proof