Oberwerk Ultra Series is our highest-quality mid-size binoculars, equaling the performance of the finest Japanese brands, for about half the price. Incredible sharpness across almost the the entire field. Very rugged construction with precise individual focusers. Of course these are fully broadband multi-coated, waterproof, and nitrogen charged. Ultra Series binoculars include an aluminum frame case. All Oberwerk binoculars have rubber-armored metal bodies, all-glass lenses, brass 1/4-20 tripod adapter threading, and caps. Your choice of 10.5x or 15x.