The Sightron SIII 10x50 ED II Binoculars are the 50mm large-objective variant of Sightron's SIII ED II series, manufactured in Japan and designed for hunters and outdoor enthusiasts who prioritize maximum light gathering performance in low-light conditions at dawn and dusk. The 50mm objective lenses paired with fully multi-coated ED glass, phase-correction coated BAK-4 roof prisms, and a 5.0mm exit pupil deliver a noticeably brighter image than 42mm alternatives when shooting light is at a premium, making this the preferred choice for elk, deer, and predator hunters who regularly glass in the last minutes of legal shooting light. At 31.4 oz in a nitrogen-purged, fully waterproof magnesium alloy body, it is a full-size binocular suited to tripod-mounted glassing sessions and extended field use, backed by Sightron's Lifetime Performance Guarantee and shipping with a carry case, neck strap, objective lens covers, eyepiece covers, and a lens cleaning cloth. Sightron SIII10X50ED II 10x Magnification 50mm Objective Lens 31.4oz Waterproof Binoculars w/ Carry Case, Strap, Lens Covers/Cloth 25182