SKU: 90857681136

Pentax 8x21 U-Series UP Binocular (Navy)

Sale price$5328.00 Regular price$5920.00
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Description

Pentax 8x21 U-Series UP Binocular (Navy)Aspherical Lens Elements BAK4 Porro Prisms Fully Multicoated Optics Angle of View: 6. 2 Center Focusing Sliding Eyecups The compact and lightweight navy 8x21 U Series UP Binocular combines aspherical optical elements and BAK4 Porro prisms to deliver edge to edge image sharpness with a 50 angle of view. The optical elements are also fully multicoated to provide a high transmission of light. With an 8x magnification and 21mm objectives, you obtain a

  • Aspherical Lens Elements
  • BAK4 Porro Prisms
  • Fully Multicoated Optics
  • Angle of View: 6.2°
  • Center Focusing
  • Sliding Eyecups

The compact and lightweight navy 8x21 U-Series UP Binocular combines aspherical optical elements and BAK4 Porro prisms to deliver edge-to-edge image sharpness with a 50° angle of view. The optical elements are also fully multicoated to provide a high transmission of light. With an 8x magnification and 21mm objectives, you obtain a notable magnification, insignificant image jitter due to unsteady hands, and a compact form factor. You can easily spot your targets with a wide 6.2° angular field of view and quickly bring them into focus with a center focus wheel. In addition to observing distant scenes, birds and game, the minimum focus of 9.2' allows you to study in detail close objects like animal footprints, marks or landscape features. The binocular also features a 2.6mm exit pupil, a 13mm eye relief, an interpupillary and a diopter adjustments.

The binocular is very compact, lightweight, and features a single piece frame that houses objectives, which allows for a synchronized interpupillary adjustment. To accommodate glass wearers, the binocular offers sliding rubber eyecups. Also included are a carrying case, a neck strap, and eyepiece covers.

Optical Performance
  • BAK4 Porro prisms
  • Aspherical optical elements offer edge-to-edge image sharpness
  • Fully multicoated optics
  • Angular field of view: 6.2°
  • Interpupillary adjustment
  • Diopter adjustment
Construction Details
  • Single piece objectives' frame allows for a synchronized interpupillary adjustment
  • Contoured body provides a comfortable grip
  • Center focus knob offers an easy focusing
  • Sliding rubber eyecups
UPC: 027075288799
Prism Type Porro
Magnification 8x
Objective Lens Diameter 21mm
Angle of View 6.2° (actual)
Field-of-View 326' @ 1000 yd / 108.23 m @ 1000 m
Minimum Focus Distance 9.24' / 2.82 m
Exit Pupil Diameter 2.6  mm
Eye Relief 13  mm
Interpupillary Adjustment Not Specified By Manufacturer
Dioptric Correction Not Specified By Manufacturer
Focus Type Center
Dimensions 4.33 x 3.26 x 1.9" / 11.00 x 8.28 x 4.83  cm
Weight 7.4 oz / 210 g
Packaging Info
Package Weight 0.7 lb
Box Dimensions (LxWxH) 4.6 x 3.7 x 2.2"
In the Box
Pentax 8x21 U-Series UP Binocular (Navy)
  • Neck Strap
  • Carrying Case
  • 2 x Eyepiece Covers
  • Limited Lifetime Warranty
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90857681136

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4.2 ★★★★★
Based on 27 reviews
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A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 1
My Dog Loved It—Until It Stopped Working
Size: Large, Color: Ball-Red
I purchased this treat-dispensing dog toy for my German Shepherd, and for the first couple of days it worked exactly as advertised. When rolled or tossed, it made an engaging sound that immediately caught my dog’s attention and encouraged him to interact with the toy to get the treats out. He absolutely loved it. Unfortunately, after only a few days, the sound feature stopped working. Then it mysteriously started working again for a short period, so I thought the issue had resolved itself. However, it has now stopped completely. No matter how much I shake, roll, or toss the toy, it no longer makes any sound. I went out of town and didn’t realize the return window had passed while I was gone. By the time I returned, the return deadline had already expired, which was disappointing because I would have returned it when the problem first appeared. Based on my experience, I cannot recommend purchasing this toy. While many of the reviews seem positive, perhaps I received a defective unit. It’s disappointing that it stopped functioning properly after barely a month of use. That said, my dog genuinely enjoyed it when it was working, and I would appreciate it if the manufacturer would stand behind their product and offer a replacement as a courtesy. I would be happy to return the defective toy. If a replacement performed as intended, I would gladly reconsider my opinion. For now, however, I am very disappointed with the functionality and reliability of this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
K
Verified Purchase
KENNETH L FREDELL
Battle Creek, US
★★★★★ 5
Tough
Size: Large, Color: Bone-Blue
Somewhat large and a bit heavy. Best for a large dog. Very tough and durable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
C
Verified Purchase
Christina Turner
Massapequa, US
★★★★★ 5
Durable for big dogs
Size: Large, Color: Ball-Red
It has a squeaky inside very tough doors loved it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
E
Verified Purchase
e. wilson
Pawtucket, US
★★★★★ 4
The Only Thing He Hasn't TOTALLY Destroyed
Size: Large, Color: Ball-Blue
I've spent my hard earned money on SOOOO many "indestructible " toys. This one is actually pretty good. It has a duck sound inside for when the pet rolls the ball to get the treats. I didn't use it for the treats. I gave this toy 4-stars because my dog broke the sound box while chewing it. We pulled the pieces out and he LOVES it. Great for play,and comfort. Sometimes, he sleeps with it. I guess you could say it's his favorite 😍.
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Reviewed in the United States on June 4, 2024
L
Verified Purchase
Lee
Natrona Heights, US
★★★★★ 5
Great balls of fun!
Size: Large, Color: Ball-Red
One of the best toys that was ever made! My wife likes to put little treats in there and I'll bat the ball around. The room gives their hours of entertainment. She puts little things like hands of corn i
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

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