We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black full-size porro prism binoculars with large 50mm objective lenses and textured rubber armouring

PENTAX

PENTAX 65904 SP 12x50 binocular

SKU CH-PT5J-PYXNQ MPN 65904

Waterproof 12x50 porro prism binocular with multi-coated lenses for bright, contrast-rich viewing in low light and harsh conditions

  • TypeBinocular
  • 12× magnification brings distant subjects into detailed view
  • 50 mm objectives gather ample light for bright images
  • Waterproof construction protects optics in wet conditions
  • Protective lens coating repels dust water and grease
  • Rugged body design withstands tough outdoor use

Pentax SP 12x50 Binoculars

The Pentax 65904 SP is a full-sized 12x50 binocular built for bird-watching, stargazing and general outdoor observation. Its Porro prism design and large objective lenses gather maximum light for bright, contrast-rich images in low-light conditions. Multi-layer lens coatings enhance transmission for crisp, true-to-life colour reproduction.

Waterproof Porro prism construction

A specialised protective coating repels dust, water and grease to keep optics clean in harsh environments. The rigid body construction makes the unit extremely rugged and durable for extended field use. Porro prism geometry provides a wide field of view and comfortable eye relief during long viewing sessions.

12x magnification with 50 mm objectives

The 12x power brings distant subjects close while the 50 mm aperture ensures strong low-light performance. This combination suits users who need high magnification and bright images at dawn or dusk. Buyers who want a more compact, lightweight binocular for daytime hiking should consider a smaller aperture model.

Highlights

  • 12× magnification brings distant subjects into detailed view
  • 50 mm objectives gather ample light for bright images
  • Waterproof construction protects optics in wet conditions
  • Protective lens coating repels dust water and grease
  • Rugged body design withstands tough outdoor use

Specifications

BrandPENTAX
ModelPX65904
TypeBinocular
Shipping weight0.91 kg
Package size25 × 25 × 25 mm

Questions about this item

What magnification and objective size does the 12x50 SP binocular provide?

The model number 65904 indicates 12× magnification with 50 mm objective lenses, giving a 12x50 optical configuration.

What physical features let the 65904 withstand wet or dusty environments?

A rigid body with a specialised protective coating repels water, dust and grease so the optics stay clean in harsh conditions.

How do I set the 12x50 SP binocular for my eyes, and what step is often missed?

Adjust the interpupillary distance until you see one circular image, then focus the centre wheel before fine-tuning the dioptre ring on the right eyepiece.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.