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Compact black porro prism binoculars with central focus wheel

PENTAX

PENTAX PX61804 10 x 21mm Binoculars

SKU CH-TEBY-43GTD

Compact 10x21mm porro prism binoculars with a 5.0-degree view and fully multi-coated optics for bright, clear images

  • 10x magnification brings distant detail close
  • 21 mm objectives keep the unit pocket-sized
  • 0° field of view captures a wide scene
  • Uni-body housing locks objectives for rugged durability
  • Fully multi-coated optics with aspherical elements maximise light transmission

Compact 10 x 21mm Porro Prism Binoculars

The PENTAX PX61804 is a new, weather-resistant binocular built around a uni-body porro prism design. Its 10x magnification and 5.0-degree angle of view deliver a wide, detailed field of view. Fully multi-coated optics with aspherical lens elements maximise light transmission for bright, clear images. Synchronised eyepiece movement reduces moving parts for long-term reliability.

Suited for birdwatching.

This model serves users who want a lightweight, durable optic for daytime observation at distance. Buyers needing larger objective lenses for low-light astronomy or marine use should consider other instruments. The fixed 10x zoom does not suit situations requiring variable magnification or close-focus macro work.

Fits in a pocket or small pack for travel and events

The compact uni-body housing locks objective lenses in a single unit, minimising bulk and protecting alignment. No tripod adapter or external power is required for operation. Fully multi-coated surfaces cut internal glare, freeing the user from constant lens cleaning during extended sessions. Weather resistance allows use in light rain or humidity.

How it compares

Measured against everything we stock in Binoculars, Scopes & Sights, at today’s prices. Recalculated every night.

Price $64.99
Cheaper than about 58% of the 1,401 comparable items (median $93.99).

Specifications

Product
Brand namePENTAX
Model namePX61804

Questions about this item

Does the 10x magnification require a tripod or can I hold the PX61804 steady by hand?

The 10x magnification on the PX61804 is designed for handheld use. Its compact 21mm objective size keeps weight low, so most users can hold it steady without a tripod for typical viewing sessions.

Will the 5.0-degree angle of view on the PX61804 feel narrower than my old 7x binoculars?

The 5.0-degree angle of view on the PX61804 provides a wide field for 10x magnification. Higher power naturally reduces apparent width versus 7x models, but the aspherical lens elements and fully multi-coated optics maintain edge-to-edge clarity across that 5.0-degree view.

How can I verify the fully multi-coated optics on the PX61804 are performing correctly after I take them outside?

Point the PX61804 at a bright sky or distant lit scene. The fully multi-coated optics should deliver a bright, high-contrast image with minimal glare or colour fringing. The 10x view should remain sharp across the 5.0-degree field without internal reflections.

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