Brunton Lite-Tech Full Size Waterproof 10X42 Roof Prism Binoculars Brunton Product Includes Binocular Great for Camping BaK-4 prism glass Nitrogen filled/fogproof Polymer frame w/ ergonomic body armor Power: 10X; Objective diameter: 42mm; Eye relief: 13.6mm; Exit pupil: 4.2mm; Field of view: 304 ft. @ 1,000 yds.; Close focus : 4 ft. Includes: lens covers, neck strap and case