ALPEN TETON BINOCULARS 10X42 The Teton binocular series features superb optical performance in a lightweight, durable body. The ED and Abbe prism optical design delivers a bright and sharp viewing with true color fidelity at an affordable price. The exclusive PXA phase vcoating and SHR metallic coating on Abbe prism provides a bright crisp image. The composite body design provides light weight, durable performance that withstands harsh field use. Additional featurs include long eye relief for full viewing performance for eyeglass wearers, twist-up eyecups, PXA phase coating, A-lock diopter, 42mm objective lens diameter, magnesium housing, 3ft close distance, 340 ft FOV, center focuser, Abbe Roof prism, weighs 28 oz.