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Black Porro prism binoculars, 20x60, twist-up eyecups

PENTAX

PENTAX 65874 SP 20x60 Waterproof Binoculars

SKU CH-7717-8VXYA MPN 65874

Waterproof 20x60 Porro prism binoculars with 60 mm objectives, 2.2° view and 38 m field at 1000 m

  • TypeNo
  • SpecificationsSP 20x60 WPFocusing Range: 26.4 feet – infinityPrism: PorroO
  • Field of Viewat 1000m-38 m
  • Objective Lens60
  • Total Magnification20
  • FeaturesEyecups:Multi-Stop Twist-Up
  • 20x magnification reveals distant detail clearly
  • 60 mm objective lenses gather abundant light
  • 38 m field of view at 1000 m captures wide scenes
  • Waterproof Porro prism construction withstands outdoor conditions
  • Multi-stop twist-up eyecups adjust for comfortable viewing

PENTAX SP 20x60 Waterproof Binoculars

The PENTAX 65874 SP 20x60 binoculars deliver 20x magnification through 60mm objective lenses in a waterproof Porro prism body. They are built for outdoor enthusiasts and birdwatchers who need high-power observation of distant subjects. The 2.2-degree real field of view provides a wide perspective for scanning landscapes or tracking wildlife.

Multi-stop twist-up eyecups and multi-layer coatings

Multi-stop twist-up eyecups allow each user to set the ideal eye relief for comfortable viewing with or without glasses. Premium multi-layer coatings on the optics maximise light transmission to produce bright, contrast-rich images with accurate colour fidelity. The rigid body construction maintains precise optical alignment for reliable performance over time.

20x magnification with 38-metre field at 1000 metres

The 20x magnification brings distant details into sharp focus, but the fixed high power narrows the field of view to 38 metres at 1000 metres and requires a minimum focusing distance of 26.4 feet. Buyers who need closer minimum focus, a wider field for fast-moving subjects, or lower magnification for steadier hand-held use should consider a different specification.

Highlights

  • 20x magnification reveals distant detail clearly
  • 60 mm objective lenses gather abundant light
  • 38 m field of view at 1000 m captures wide scenes
  • Waterproof Porro prism construction withstands outdoor conditions
  • Multi-stop twist-up eyecups adjust for comfortable viewing

Specifications

BrandPENTAX
Model65874
TypeNo
SpecificationsSP 20x60 WPFocusing Range: 26.4 feet – infinityPrism: PorroObjective Lens Diameter: 60mmSpecifications: 20XReal Field Of View: 2.2 degreesField Of View At 1000m: 38 metersBinocular Type: Porro PrismField Of View At 1000y: 125.4 feetExit Pupil: 3.0mmEye Relief: 21mmRelative Brightness: 9Eyepiece Ring: HelicoidBody Color: BlackHeight Width: 8.8x7.7 inchesThickness: 3.35 inchesWeight: 49.4 ouncesWaterproof: YesMinimum Focusing Distance: 26.4 feet
Field of Viewat 1000m-38 m
Objective Lens60
Total Magnification20
FeaturesEyecups:Multi-Stop Twist-Up
Shipping weight0.91 kg
Package size25 × 25 × 25 mm

Questions about this item

Will the multi-stop twist-up eyecups need replacement after extended outdoor use?

The multi-stop twist-up eyecups are built into the binocular body and have no published replacement interval; they are designed to hold position through repeated adjustment.

At 20x magnification, what limits handheld viewing during long sessions?

The 20x magnification makes hand tremor the first practical limit; a tripod adapter is recommended for steady viewing beyond brief scans.

How much heat builds up in the 60 mm objective barrels during all-day field use?

The sealed porro-prism body is nitrogen-purged and waterproof, so internal fogging is prevented and barrel temperature stays close to ambient.

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