Z9157 Head Mounted Binoculars Tactical Hands Free Goggles Long Rang Infrared Night Vision for Traveling Hunting Gifts

Ideal Gift for someone who wants the BEST in opticsProduct Highlights 

·Aspheric Eco-Glass Elements

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·Porro Prism Design

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·Multicoated Optics

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·Wide Angle Viewing

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·Closed-Bridge Configuration

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·Center Focus Wheel

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·Twist-Up Rubber Eyecups

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·Rubber Armored Housing

·OverviewThe 10x50 Aculon A211 Binocular from Nikon is a handheld fixed-magnification optic with multicoated aspherical lenses and an ergonomically-designed housing. For the redesigned Aculon series, Nikon packages the Aculon A211 binoculars with environmentally-friendly Eco-Glass elements composed of responsibly-sourced arsenic-free material. The Aculon binocular's Porro prism design delivers enhanced depth of field, and its multicoated aspheric optical path with 50mm objective lenses deliver the image clarity, brightness, and flat FOV demanded by nature observers.Also new to the 2013 version of the Aculon binocular is a sculpted rubber-armored housing that is designed to fit comfortably into the observer's hand and provide non-slip handling. Grooved ridges atop the housing and a generously-sized focusing wheel enable adjustments to the interpupillary distance and the point of focus even while wearing gloves. Nikon's Turn-and-Slide eyecups allow quick re-setting of the eye relief. The combination of image quality and user-friendly design make the 10x50 Aculon A211 a cost-effective option for intermediate to long-range glassing.Optical Performance 

·10x magnification, 50mm objectives

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·Arsenic-free Eco-Glass elements

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·Multicoated optics, BaK-4 Porro prisms

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·341 ft (104m) field of view at 1000 yd

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·59.2° apparent viewing angle

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·23 ft (7m) minimum focus distance

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·11.8mm eye relief, 5mm exit pupil

·Use and Handling 

·Turn-and-Slide twist-up rubber eyecups

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·Center focus wheel

·Construction Details 

·Ergonomic sculpted rubber armoring

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·Black housing finish

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·31.7 oz (899g) weight

·SpecificationsPrism Type Porro

Magnification 10.0 x

Objective Lens Diameter 50 mm

Angle of View 6.5° (actual)

Field-of-View 341' @ 1000 yd / 113.21 m @ 1000 m

Minimum Focus Distance 23' / 7.01 m

Exit Pupil Diameter 5 mm

Eye Relief 11.8 mm

Interpupillary Adjustment Not Specified By Manufacturer

Dioptric Correction Not Specified By Manufacturer

Focus Type Centre

Tripod Mount Not Specified By Manufacturer

Dimensions 7.8" x 7." / 19.81 x 17.78 cm

Weight 31.7 oz / 899 g