Alpen Apex 15x56mm Waterproof Binoculars

Apex 15x56mm Binoculars with BaK4 Roof Prisms, Phase-Coated Optics, Waterproof and Fogproof Design by Alpen Optics Features: High-powered 15x magnification for long-range detail Large 56mm objective lenses for brighter low-light viewing BaK4 roof prisms for improved clarity and sharpness Phase-coated and silver-coated prisms for better contrast and resolution Fully broadband multi-coated optics to maximize light transmission Durable magnesium housing that is lighter and stronger than aluminum IPX7 waterproof construction for full weather protection Nitrogen-purged for fogproof performance in changing environments Long 19mm eye relief for comfortable viewing with or without glasses Twist-up eyecups for quick and easy eye positioning Smooth center focus system for fast, precise adjustments Wide 61–74mm interpupillary range to fit most users 3m close focus distance for both near and distant viewing What's Included: ✓ Alpen Apex 15x56mm Binoculars ✓ Rubber Eyepiece Rainguard ✓ Rubber Objective Lens Rainguard ✓ Cleaning Pen ✓ Limited Lifetime Warranty Specifications: Magnification 15x Objective Lens Diameter 56mm Prism Type Roof (BK7 + BaK4) Prism Coating Phase Coated / Silver Coated Lens Elements 9 pieces / 6 groups Lens Coating Fully Broadband Multi-Coated (FBMC) Exit Pupil Diameter 3.8mm Eye Relief 19mm Field of View (ft @ 1000 yds) 230 ft Field of View (m @ 1000 m) 76.5 m Close Focus 3 m Interpupillary Distance 61–74 mm Waterproof Yes (IPX7) Fogproof Yes (Nitrogen Purged) Eyecups Twist-Up Relative Brightness 14.44 Twilight Index 28.85 Material / Build Magnesium housing