The Signature series 10x50 reaches a new threshold in binocular price, performance, and value. Their precisely-polished lenses and BaK4 prisms are fully broadband multi-coated to allow superb 99.5% per surface and greater than 92% total light transmission for exceptionally bright and contrasty images. They feature excellent ergonomics and durable rubber-armored all-aluminum construction that will provide each priviledged owner with a lifetime of enjoyment and reliable performance. These binoculars utilize a sophisticated, 5-element ocular design that allows them to acheive better edge-of-field correction than our standard Gemini® and Classic series products.