Alpen Alpen Apex XP 8x56 ED Binocular BAK4 Multicoated Dark Green Large Roof. Each rugged Apex XP Binocular is waterproof for all-weather performance and purged with nitrogen gas to create an internal environment that is impervious to fogging. Specifications for Alpen Apex XP 8x56mm ED Roof Prism Binocular: Manufacturer: Alpen Color: Dark Green Magnification: 8 x Objective Lens Diameter: 56 mm Prism System: Roof Prism Material: BAK4 Eye Relief: 17.5 mm Optical Coating: Multicoated Binoculars Focus System: Center Focus Close Focus: 9.8 m Weather Resistance: Fog Resistant Water Resistance Level: Waterproof Weight: 2.3 lb Magnification Type: Fixed Features of Alpen Alpen Apex XP 8x56 ED Binocular HD High definition ED Extra low dispersion optical system PXA phase coating for superior resolution and color fidelity HR metallic prism coating for enhanced light transmission and brightness Waterproof Fog-proof BAK4 Optics Lightweight Fully Multi-Coated Item Number 652 Magnification 8x Waterproof Yes 1m/30mins Field of View 305FT Lens Coatings Fully Multi-Coated Eye Relief 17.5mm Focuser Type Center Objective Lens Diameter 56mm Close Focus 9.8m Prism Roof/BaK-4 Eyecup Type Twist-Up Weight 2.3LB / 1042G Package Contents: Alpen Alpen Apex XP 8x56 ED Binocular Bag Lens cleaning tool Alpen 652: Alpen Apex XP 8x56 ED Binocular BAK4 Multicoated Dark Green Large Roof