SKU: 34647496952

Pentax 8-16x21 U-Series UP Binocular (Black)

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Description

Pentax 8-16x21 U-Series UP Binocular (Black)Aspherical Lens Elements BAK4 Porro Prisms Fully Multicoated Optics 8 16x Optical Zoom Angle of View Range: 5 3 Center Focusing Sliding Eyecups 1 4" 20 Tripod Socket The compact and lightweight black 8 16x21 U Series UP Binocular combines aspherical optical elements and BAK4 Porro prisms to deliver edge to edge image sharpness with a wide angle of view. The optical elements are also fully multicoated to provide a high transmission of light. With an 8

  • Aspherical Lens Elements
  • BAK4 Porro Prisms
  • Fully Multicoated Optics
  • 8-16x Optical Zoom
  • Angle of View Range: 5-3°
  • Center Focusing
  • Sliding Eyecups
  • 1/4"-20 Tripod Socket

The compact and lightweight black 8-16x21 U-Series UP Binocular combines aspherical optical elements and BAK4 Porro prisms to deliver edge-to-edge image sharpness with a wide angle of view. The optical elements are also fully multicoated to provide a high transmission of light. With an 8-16x range of magnification and 21mm objectives, you obtain a wide zooming range and a compact form factor. You can easily spot your targets with a 5° angular field of view at 8x magnification and quickly zoom in on them with the optical zoom. To reduce image jitter at high zoom factors or for prolonged observations, you can connect the binocular to a tripod via an integrated 1/4"-20 socket. In addition to observing distant scenes, birds and game, the minimum focus of 9.9' allows you to study in detail close objects like animal footprints, marks or landscape features. The binocular also features a 2.6-1.3mm exit pupil range, a 14-11mm eye relief range, 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 eye glasses wearers, the binocular offers sliding rubber eyecups. Also included are a carrying case, a neck strap, and eyepiece covers.

Optical Performance
  • Optical zoom range: 8-16x
  • BAK4 Porro prisms
  • Aspherical optical elements offer edge-to-edge image sharpness
  • Fully multicoated optics
  • Angular field of view range: 5-3°
  • 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
  • 1/4"-20 tripod socket
UPC: 027075288881
Prism Type Porro
Magnification 8-16x
Objective Lens Diameter 21mm
Angle of View 8x:(actual)
16x:(actual)
Field-of-View 8x: 261' @ 1000 yd / 86.65 m @ 1000 m
16x: 156' @ 1000 yd / 51.79 m @ 1000 m
Minimum Focus Distance 9.9' / 3.02 m
Exit Pupil Diameter 8x: 2.6  mm
16x: 1.3  mm
Eye Relief 8x: 14  mm
16x: 11  mm
Interpupillary Adjustment Not Specified By Manufacturer
Dioptric Correction Not Specified By Manufacturer
Focus Type Center
Tripod Mount Yes
Dimensions 4.37 x 4.37 x 2.1" / 11.10 x 11.10 x 5.33  cm
Weight 10.9 oz / 309 g
Packaging Info
Package Weight 1.15 lb
Box Dimensions (LxWxH) 5.7 x 5.7 x 3.2"
In the Box
Pentax 8-16x21 U-Series UP Binocular (Black)
  • 2 x Eyepiece Covers
  • Neck Strap
  • Carry Case
  • Lifetime Limited 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: 34647496952

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4.1 ★★★★★
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Adam Rigdon
Lake Worth, US
★★★★★ 5
Love them!!
Size: Queen, Number of Items: 2, Size: Queen, Number of Items: 2
Ok I normally don't leave reviews but I had to on this pillow. I was looking forever for a pillow and was nervous about buying one because you know how that usually goes when it comes to buying pillows. They arrived compressed but when you unwrap them they blow up to be a heavy duty pillow. Firm but not too firm. I don't like super soft pillows that you can roll up in a ball with one hand, I like a pillow that gives support and these do just that. They are cooling as well they are pretty for a pillow with the unique design. If you are in the market for a pillow and reading this THEN BUY THIS PILLOW & come back to tell me thank you. I promise you will NOT be disappointed. No I didn't get paid to say any of this. I wanted to give a honest review where it deserves one! You will not be disappointed! Thanks for the fast over night shipping as well. Not to mention the pricing is on point. I can say right now you will not find 2 pillows of this quality & price.
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Reviewed in the United States on April 1, 2026
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KEM
Charlottesville, US
★★★★★ 5
Perfect pillows
Size: Queen, Number of Items: 2
Soft, but durable. Comfortable and cool during sleep.
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
James P
Alexandria, US
★★★★★ 4
Best pillow I’ve ever tried—hands down!
Size: Queen, Number of Items: 2
I’ve gone through a bunch of pillows over the years, but this BETU Cooling Pillow is by far the best one I’ve ever used. I sleep in literally every position—on my back, stomach, and sides—and this pillow works perfectly no matter how I’m laying. It really does have a cooling effect, which I love as a hot sleeper. Just make sure your room is cool too, and it makes a big difference. It came vacuum-packed, but it fully expanded within just a few hours. I was able to sleep on it the same day it arrived, and it was super comfy right from the start. I also washed and dried the pillowcase before using it, and it came out looking and feeling great—no shrinking or damage at all. Honestly, I look forward to going to bed every night now just because of this pillow. It’s supportive, comfortable, and totally worth it!
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Reviewed in the United States on February 21, 2026
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Amazon Customer
Draper, US
★★★★★ 5
Excellent pillows!
Size: Queen, Number of Items: 2
This pack came with 2 pillows, one firm and one that was flatter and squishy. I absolutely love the flatter one! Most comfortable pillow I've ever used! The firm one was a bit too much for me, but my husband loves it.
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Reviewed in the United States on March 28, 2026
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Phanessa Hernandez
Port Orchard, US
★★★★★ 3
It’s alright.
Size: Queen, Number of Items: 2
Not bad pillows. They are comfortable but mine came with an odd odor, kind of mildewy smell to it. Had to spray it down to tolerate sleeping on it.
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Reviewed in the United States on May 5, 2026

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