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Thornfield HousePentax 10x25 UP Binoculars - Black
Our Price: £129.99
20% Off Voucher
Get 20% off this item using code PENTAX20 at the checkout from 6th November 2026 to 10th January 2027, while stocks last.
The Pentax 10x25 UP Compact Binoculars are highly portable and functional, ideal for outdoor enthusiasts who want bright, sharp images in a lightweight design. The innovative unibody construction locks the objective lenses into place, while the eyepieces use a dual-axis mechanism to stay symmetrical when adjusting the interpupillary distance.
These binoculars offer 10x magnification with 25mm fully multicoated objective lenses, maximising light transmission and reducing reflections. The BAK4 Porro-prism design provides clear, high-contrast images, and aspherical lens elements minimise edge distortion and correct lens astigmatism for consistently sharp focus. They provide a wide 262.5-foot field of view at 1000 yards and a 50° angle of view.
A dual-axis synchronised eyepiece adjustment keeps the optics perfectly aligned, while the knurled centre focus wheel ensures smooth, precise focusing. Twist-up eyecups allow comfortable use with or without eyewear, and 15mm eye relief with a 2.5mm exit pupil provides a relaxed viewing experience. A standard tripod mount adds versatility for extended use.
The lightweight, fibreglass-reinforced polycarbonate housing resists corrosion, impact, and temperature extremes, helping maintain optical alignment. Rubberised armouring protects against bumps and provides a slip-resistant grip, while the inner focusing mechanism preserves waterproof seals for reliable performance in all conditions.
What's included:
| Prism Type | Porro |
| Magnification | 10x |
| Objective Lens Diameter | 25 mm |
| Angle of View | 5° (Actual) |
| Field of View | 262.5' @ 1000 yd / 87.5 m @ 1000 m |
| Exit Pupil Diameter | 2.5 mm |
| Minimum Focus Distance | 12.4 m / 40.6' |
| Eye Relief | 15 mm |
| Diopter Adjustment | Yes |
| Focus Type | Center |
| Environmental Resistance | Water-Resistant (Unrated) |
| Dimensions | 11.4 x 10.9 x 5.6 cm / 4.5 x 4.3 x 2.2" |
| Weight | 300.5 g / 10.6 oz |
Genuine UK stock, sold by people who actually use this gear -- not a general electronics marketplace.
Walk in and try before you buy at our Sheffield store, or order online with free UK mainland delivery on orders over £50.
Have equipment to trade? Part-exchange against a new camera or sell your gear for a bank transfer.
Every new item comes with the full UK manufacturer warranty, not a grey-import or parallel-import version.


