The Oberwerk Deluxe Series includes the 20x80mm Deluxe III and the 25x100mm CF Deluxe, both with convenient center-focus, and the 25x100mm IF Deluxe, which has precise individual focus. These large binoculars offer serious light-gathering power, with excellent image quality- for a surprisingly-affordable price. They are ideal for amateur astronomy, as well as long-range terrestrial viewing. The relatively-compact 20×80 Deluxe III also has a triplet objective design, which limits the chromatic aberration that would normally be present in such a short focal length instrument. Of course they are all fully broadband multi-coated, waterproof, and nitrogen-filled. The Deluxe Series binoculars feature very rugged construction, with a rubber-armored metal body and a built-in mount, which bridges the body hinge to the objective hinge. This objective hinge helps to maintain collimation (alignment) if the binocular is subjected to bumps and impacts. The built-in mount connects directly to a tripod head without adapters. Includes objective and ocular caps, and our new-for-2017 Heavy-Duty aluminum-frame case. Note that these binoculars are heavy, and will require a suitable tripod and head for best performance.