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Swift Sport Optics has added a roof prism version of the world famous Audubon binocular. Using the same renowned 8.5x, 44 optical formula, BaK4 prisms, twist-up eyecups, and lightweight rubber armoured body as the porro prism Audubons. The Swift 828 offers fully multi-coated optics for high resolution viewing, close focus to under 9 feet and a comfortable 19mm eye relief. The latest models incorporate a left diopter adjustment operated from the center focus knob for a more convenient quick focus.
Equipped with a neoprene neck strap, rainguard and objective lens covers, microfiber lens cloth and padded field case.
Features:
5-Lens Ocular System
• BaK4 Prisms
• Fully Multi-coated Optics
• Center Focus Diopter Adjustment
• Waterproof, Fogproof and Shock Proof
• SwiftPremier Twenty Five Year Warranty
Specifications:
Prism Type Roof, 8.5x44
• Objective Diameter 44mm
• Field of View @ 1000 yds/m 336ft/112m
• Weight 23.4oz/664g
• Close Focus under 9ft/2.7m
• Eye Relief 19mm
• Prisms BaK4, Phase Coated
• Lens Coating Fully Multi-coated
• Interpupillary 57-73mm
• Armoured Rubber Armour
• Eyecups Twist-up
• Waterproof Yes
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