Alpen Wings 10x42 Binocular BAK4 Multicoated Dark Green Medium Roof. Full multi-coated Wings Binoculars from Alpen delivers premium brightness and vivid detail across the entire field of view. With a crisp BAK4 roof prism fully multi-coated optics and a BaK4 prism these Binoculars deliver views that soar past the limits of your sight. Superbly lightweight the Alpen Wings Binocular is made with a lightweight and ergonomic open hinge body design. Alpen Wings 10x42mm Binoculars also feature an open hinge body design that provides superior light transmission that is ideal for use in low light conditions. Alpen Wings Waterproof Binoculars are also fogproof purged with an inert gas to prevent internal fogging and small bumps. The Alpen Wings 10x42 Binocular is nitrogen purged making them water proof and fog proof. Alpen Wings 10x42mm Roof Prism Binoculars are the perfect companion for hikes through the woods or a hike on a foggy day. Specifications for Alpen Wings 10x42mm Roof Prism Binocular: Manufacturer: Alpen Color: Dark Green Magnification: 10 x Objective Lens Diameter: 42 mm Prism System: Roof Prism Material: BAK4 Eye Relief: 16.1 mm Field of View Linear: 347 ft at 1000 yds Optical Coating: Multicoated Binoculars Focus System: Center Focus Close Focus: 8 ft Water Resistance Level: Waterproof Weight: 35.2 oz Magnification Type: Fixed Features of Alpen Wings 10x42 Binocular Waterproof BAK4 Optics Long Eye Relief Fully Multi-Coated Lightweight and ergonomic open hinge body design Twist up eye cups Package Contents: Alpen Wings 10x42 Binocular Bag Lens cleaning tool Alpen 546: Wings 10x42 Binocular BAK4 Multicoated Dark Green Medium Roof