Alpen Alpen Teton 8x42 EDHD Binocular w/Abbe Prism Multicoated Dark Green Medium Roof. These Binoculars from the experts at Alpen have 42mm objective lens diameters with an ED and Abbe prism extra low dispersion optical system that provides enhanced sharpness and resolution over traditional models. The Alpen Teton 8x42mm Waterproof Roof Prism Binocular features the PXA phase correction coatings for excellent clarity and contrast. The rugged lightweight magnesium alloy housing on this Alpen Teton Waterproof Roof Prism Binocular is O-ring sealed and nitrogen filled to provide water proof and fog proof performance in any conditions. For a great way to improve your outdoor excursions choose the Alpen Teton 8x42 EDHD Roof Prism Binocular. Specifications for Alpen Teton 8x42mm EDHD Roof Prism Binocular: Manufacturer: Alpen Color: Dark Green Magnification: 8 x Objective Lens Diameter: 42 mm Prism System: Roof Field of View Linear: 390 ft at 100 yds Optical Coating: Multicoated Binoculars Focus System: Center Focus Close Focus: 9 ft Weather Resistance: Fog Resistant Water Resistance Level: Waterproof Weight: 2.3 lb Condition: New Magnification Type: Fixed Features of Alpen Alpen Teton 8x42 EDHD Binocular HD High definition ED Extra low dispersion optical system Abbe prisms with Alpens exclusive SHR metallic coating for bright sharp high-resolution images A-lock diopter system allows you to set and lock the right eyepiece to fit your personal eye setting PXA phase coating for outstanding clarity and contrast Fully multi-coated for maximum brightness Long eye relief provides full viewing performance for eyeglass wearers Waterproof sealed and nitrogen filled for guaranteed internal fog-free performance Twist-up eyecups Item Number 81 Magnification 8x Waterproof Yes Field of View 390FT / 129M Lens Coatings Fully Multi-Coated Focuser Type Center Objective Lens Diameter 42mm Close Focus 9FT / 3M Housing Magnesium Prism Abbe Roof Light Transmission 92 Eyecup Type Twist-Up Weight 2.3LB / 1042G Package Contents: Alpen Alpen Teton 8x42 EDHD Binocular Bag Lens cleaning tool Alpen 81: Alpen Teton 8x42 EDHD Binocular w/Abbe Prism Multicoated Dark Green Medium Roof