Pentax

Pentax 88045 Ultra Compact Binoculars

3.5 (13 reviews)

Compact and Portable: Pentax 8x21 Binoculars Experience exceptional portability with the Pentax 8x21 Binoculars. These ultra-compact, dual-hinge binoculars are perfect for on-the-go viewing. Featuring a large center focus dial and multi-coated lenses, they deliver clear and quick focusing on you...

$29.00*
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*Price sourced from Amazon.com. Last updated:Jul 13, 2026.Price and availability are subject to change.

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Overview

Compact and Portable: Pentax 8x21 Binoculars

Experience exceptional portability with the Pentax 8x21 Binoculars. These ultra-compact, dual-hinge binoculars are perfect for on-the-go viewing. Featuring a large center focus dial and multi-coated lenses, they deliver clear and quick focusing on your subject.

Detailed Specifications:

  • Magnification: 8x
  • Objective Lens Diameter: 21mm

Key Features

Ultra Compact, Dual-hinge Design For Exceptional Portability

Multi-coating On Lens Optics & Prism Help Minimize Light Flare & Image Ghosting

Right Eyepiece Diopter Ring Adjusts To 5 Optical Degrees To Perfectly Tailor Focus To Individual Viewer

Large Center-focus Dial Quickly Set Focus

Includes Strap, Case & Lens Cloth

Specifications

Design
Ultra Compact, Dual-hinge
Lens Coating
Multi-coating on Lens Optics & Prism
Focus System
Large Center-focus Dial
Diopter Adjustment
Right Eyepiece Diopter Ring (adjusts to 5 optical degrees)
Included Accessories
Strap, Case, Lens Cloth

Pros & Cons

👍 Pros

  • Features an ultra-compact, dual-hinge design, making it exceptionally portable and easy to carry.
  • Multi-coating on both lens optics and prism helps to minimize light flare and image ghosting, improving clarity.
  • The right eyepiece diopter ring adjusts to 5 optical degrees, allowing for precise focus tailored to individual viewers.
  • Equipped with a large center-focus dial, enabling quick and easy focus adjustments on subjects.
  • Includes essential accessories: a strap, case, and lens cloth, adding value and convenience for carrying and maintenance.

👎 Cons

  • Specific magnification and objective lens diameter (e.g., 8x25 or 10x32) are not provided, which are key performance indicators for binoculars.
  • The field of view and eye relief are not specified, which are important for comfort and the breadth of visible area.
  • Details on water resistance or fog proofing are absent, limiting knowledge about its durability in various outdoor conditions.
  • The type of prism (e.g., BaK-4, BK7) is not mentioned, which can affect image brightness and sharpness.
  • The minimum focus distance is not listed, which might be a consideration for close-up viewing of objects.

Frequently Asked Questions

The Pentax 88045 binoculars feature an ultra-compact, dual-hinge design, prioritizing exceptional portability.
They feature multi-coating on both the lens optics and prism, which helps to minimize light flare and image ghosting.
Yes, the right eyepiece diopter ring adjusts to 5 optical degrees, allowing for precise focus tailored to each viewer.
The binoculars come with a strap, a protective case, and a lens cloth for maintenance and convenience.
Focus is quickly set using a large center-focus dial, allowing for rapid adjustments.