DESC: Alpen Wings ED 10x42 mm Waterproof Binoculars soar with second - to - none optical quality. Click image to enlarge... Featuring ED (Extra Dispersion) optics... special fluorite glass that provides the very best in color fidelity and contrast in ALL light conditions. Add in Alpen 's full multi- and PXA phase coatings, and you've got uncompromising optical clarity that puts other binocs to shame. Alpen quality: 10x magnification, 42 mm objective size BaK-4 Extra Dispersion glass for clear, bright, high resolution images, from dawn to dusk Fully multi-coated for maximum brightness PXA phase coating for superior resolution and color fidelity Waterproof and fogproof, sealed and nitrogen filled Lightweight, ergonomic open hinge body design for easy carry through the field Rubber armoring for comfort, protection and durability Long 15mm eye relief and twist-up eye cups for use with or without eyeglasses Includes deluxe travel case and neck strap F.O.V. @ 1,000 yds.