Buy Bushnell 8x21 Compact Binocular-Black Online Roof Prism 7.2° Angle of View Compact 8x21 roof prism binocular with a wide 7.2° viewing angle Fully coated optics Non-slip rubber armor absorbs shock while providing a firm grip Contemporary styling Info The Bushnell 8x21 Powerview Binocular is a basic and very compact 'twin bridge' style roof prism unit that's ideal for travel use in daylight viewing. It has fully coated optics, rubber armoring, and modern styling. It is so small that it can easily fit in a shirt pocket, jacket pocket, or a vehicle's glovebox. Specs Prism Type Roof Magnification 8x Objective Lens Diameter 21 mm Angle of View 7.2° Field-of-View 378' @ 1000 yd / 125.50 m @ 1000 m Minimum Focus Distance 21.0' / 6.40 m Exit Pupil Diameter 2.6 mm Eye Relief 10 mm Interpupillary Adjustment Not Specified By Manufacturer Dioptric Correction Not Specified By Manufacturer Focus Type Center Tripod Mount None Dimensions 3.6 x 1.3 x 4.2" / 9.14 x 3.30 x 10.67 cm Weight 6.88 oz / 195 g