Athlon Optics Cronus Gen II UHD 15x56mm Roof Prism Binoculars Black. Whether you are on your annual hunt for whitetails on the family farm in Alabama or filling your tag on a once-in-a-lifetime Montana Big Horn dont leave anything to chance. We included extra-low dispersion UHD glass resulting in a clearer and sharper image. Our state-of-the-art ESP (Enhance Spectral Prism) dielectric coating reflects 99percent of the light through the prism assembly. We use a Magnesium chassis to reduce weight while keeping the chassis rugged to withstand the scrapes and bumps of constant use. Specifications for Athlon Optics Cronus Gen II UHD 15x56mm Roof Binoculars: Manufacturer: Athlon Optics Color: Black Magnification: 15 x Objective Lens Diameter: 56 mm Prism System: Roof Prism Material: E2ES Eye Relief: 18.5 mm Exit Pupil: 3.7 mm Field of View Linear: 235 ft at 1000 yds Field of View Angle: 4.5 degrees Optical Coating: Advanced Fully Multicoated Binoculars Focus System: Center Focus Interpupillary Distance: 59 - 74 mm Close Focus: 13.1 ft Weather Resistance: Yes Water Resistance Level: Waterproof Length: 8.7 in Weight: 45.2 oz Finish: Black Rubber Armor Package Type: Box Magnification Type: Variable Features of Athlon Optics Cronus Gen II UHD 15x56mm Roof Binoculars Phase Coated BaK4 Prisms AdvancedFully Multi-Coated Lenses Magnesium Chassis Locking Diopter Long Eye Relief Close Focus Twist Up Eye-Cups Waterproof Tripod Adaptable UHD Glass ESP Dielectric Coating E2ES System XPL Coating Argon Purged Package Contents: Athlon Optics Cronus Gen II UHD 15x56mm Roof Binoculars Athlon Optics 111005: Cronus Gen II UHD 15x56mm Roof Prism Binoculars Black