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Pentax UP 8 x 25 WP Waterproof Binoculars

SKU: PEN-61931

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  • BaK-4 prisms

  • Waterproof

  • Long eye relief

  • Inner focus optics design

  • Unique Uni-body design

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These Pentax compact porro-prism models feature a dual-axis, single body design with synchronoised eyepiece adjustments. 

Fully multi-coated optics assure maximum light transmission resulting in high-quality viewing. Every surface of every element is fully coated which minimises internal glare and flare, hence providing a view that is clear and bright. Incorporated with aspherical lens elements, giving you edge-to-edge sharpness.

Durable porro prism as well as a unique Uni-body design which can enhance durability by locking objective lenses in a single housing and synchronising the eyepiece movement. With less moving parts this ensures the binoculars will function properly and clearly for years to come.

Aspherical lens elements, which are critical in compact binoculars, provide exceptional edge-to-edge sharpness. This assures that items on the edge of your field of view are just as sharp as those in the center.

Sharp images and clearly affordable


Product type Porro prism, center focus, waterproof
Focusing range 1.9m-infinity
Prism Porro
Objective lens diameter 25mm
Specifications 8x
Real field of view 6.2 degrees
Field of view @1000m 108m
Exit pupil 3.1mm
Eye relief 15mm
Relative brightness 9.6

Additional Information

Additional Information

Magnification 8 times
Aperture 25mm
Prism Type Porro
Prism Glass Quality BaK-4
Waterproof Yes
Fogproof No
Close Focus N/A
Field of View 108m@1000m
Eye Relief 15mm
Exit Pupil N/A
Twilight Factor N/A
Tripod Adaptable N/A
Locking Diopter N/A
Dimensions N/A
Binoculars Weight 348g
Warranty Information Limited Lifetime Warranty
Shipping Weight N/A
Additional Specifications of Product No