Combining exceptional magnification and large, fully multi-coated lenses, the Sightmark® Solitude 12x50 Binoculars are designed for vivid, long distance imaging from sun up to sun down. Featuring a Bak-4 roof prisms-the highest quality optical glass on the market-the Solitude 12x50 Binoculars are engineered with an advanced, straight tube light system, achieving maximum light transmission and optimal brightness. Engineered to withstand the harsh conditions of the outdoors, Solitude 12x50 Binoculars are built with a durable rubber-armored, nitrogen-filled and O-ring sealed body, making them waterproof, fog proof and dust proof. The twist-up, adjustable eye cups provide a comfortable, custom fit, helping to correct eye relief at any viewing position.