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Designed to provide an immersive experience for nature and bird watching, Pentax's 8x40 S-Series SP Binocular boasts a wide 65.6ø angle of view and porro prisms that produce a rich depth of view.
The 40mm objectives are fully multicoated to reduce reflection and maximize light transmission through the entire optical path without making them overly cumbersome for a long day on the trail.
The coatings ensure bright and clear high-contrast images even in low-light, and its utilitarian 8x magnification brings subjects close while maintaining wide 430' field of view at 1000 yards to preserve situational awareness.
The binocular sports a 13mm eye relief and the fold-down eyecups seal against the ocular cavity to block stray peripheral light which can dim images.

BAK4 Porro Prism Fully Multicoated Optics
Wide-Angle of View: 65.6ø
Closed Bridge Configuration
Slip-Resistant Rubberized Armoring
Large Center Focus Wheel
Tripod Mountable with Optional Adapter
Fold-Down Rubber Eyecups

Magnification 8x
Objective Lens Diameter 40 mm
Angle of View 6.3° (Actual)
Field of View 330.7' @ 1000 yd / 110.2 m @ 1000 m
Minimum Focus Distance 74.9' / 22.8 m
Exit Pupil Diameter 5 mm
Eye Relief 20 mm
Diopter Adjustment Yes
Focus Type Center
Fogproof Yes, Nitrogen Filled
Water Resistance Waterproof
Dimensions 7 x 5.4 x 3" / 17.8 x 13.7 x 7.6 cm
Weight 31.8 oz / 901.5 g