The compact and lightweight navy Pentax 10x21 U-Series UP Binocularscombine 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 10x magnification and 21mm objectives, you obtain a higher than average magnification and a compact form factor. You can easily spot your targets with a wide 5° 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 binoculars also feature a 2.1mm exit pupil, a 9.5mm eye relief, an interpupillary and a diopter adjustments.

The binoculars are 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 binoculars offer sliding rubber eyecups. Also included are a carrying case, a neck strap, and eyepiece covers.

Aspherical Lens Elements    BAK4 Porro Prisms    Fully Multicoated Optics    Angle of View: 5°    Center Focusing    Sliding Eyecups

• Aspherical optical elements offer edge-to-edge image sharpness
• BAK4 Porro prisms
• Fully multicoated optics
• Angular field of view: 5°
• Interpupillary adjustment
• Diopter adjustment

• Single main piece allows for a synchronized interpupillary adjustment
• Contoured armoring provides a comfortable grip
• Center focus knob offers an easy focusing
• Sliding rubber eyecups

Related Questions and Answers

Q: 1. What is the difference between the SP and SP WP version of the same binoculars ?

A: The SP Version has a wider angle of view with the same Magnification as the SP WP. Plus the SP has a Eye Relief of 13mm, and the SP WP has a much more comfortable Eye relief of 20mm.

Q: 2. Are these fog proof?

A: The Pentax 8x40 S-Series SP Binoculars BH #PE8X40SP • MFR #65902 are not fog or waterproof.

Q: 3. Fog proof ?

A: The Pentax 12x50 S-Series SP Binoculars BH #PE12X50SP • MFR #65904 are not fog or waterproof.

Q: 4. how do they compare optica llyto the SD version? I don't spot diopter correction in these

A: The right eyepiece has a diopter adjustment. If you are referring to the Pentax 8x42 S-Series SD WP Binoculars BH #PE8X42SDWP • MFR #62761. The Pentax 8x43 Z-Series ZD WP Binoculars BH #PE8X43ZDWP • MFR #62721 has a Magnesium Alloy Chassis and a narrower field of view

Q: 5. Does Pentax manufacture these in Japan?

A: Yes this series is made in Japan.

Q: 6. Are these at least water "resistant" in heavy rain? I understand they are not the waterproof version, but I don't plan on submerging them in water. Thanks in advance.

A: A very difficult question to answer. To a certain point all binoculars should survive a rain shower. Some better than others, as long as you dry them off as soon as possible.

Q: 7. Where is it made?

A: The Pentax 8x42 S-Series SD WP Binoculars are made in the Philippines.

Q: 8. What is the difference between this UP model and the UCF R 8x21 model?

A: Pentax 8x21 UCF R Binocular B&H # PE8X21UCFR comes with the Pentax "Worry Free" warranty. The Pentax 8x21 U-Series UP Binocular, comes in three different colors with the Pentax Limited 25-Year Warranty

Q: 9. Do these come with a neck strap?

A: Pentax 8x25 U-Series UP Compact Binoculars BH #PE8X25UP • MFR #61901 In the Box Pentax 8x25 U-Series UP Compact Binoculars Neck Strap ***************** Carrying Case 2 x Eyepiece Caps Limited 25-Year Warranty Yes it comes with a neck strap.

Q: 10. What is included in the package?

A: The Pentax 10x50 S-Series SP Binoculars BH #PE10X50SP • MFR #65903 comes with: Neck Strap Carrying Case with Strap 2 x Objective Lens Caps 2 x Eyepiece Caps Limited 25-Year Warranty