Vortex Diamondback 10x42 Binoculars

SKU DB-205      CID 156053
vortex diamondback 10x42 binoculars

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The Vortex Diamondback 10x42 Binocular offers quality optics at a budget friendly price in a lightweight package. Diamondbacks have an upgraded optical system featuring dielectric and phase-corrected prisms and improved fully multi-coated lenses for a brighter view than the original Diamondbacks. The textured grip, focus wheel, and diopter offer you a good sense of control through tried and true ergonomics, while the twist out eyecups and 15mm eye relief offer comfort. The close focus measures 6.7', while an FOV of 330 ft. @ 1000yds offers a great span of viewing near and far subjects. All of that along with Vortex's VIP (no-fault) warranty means your Diamondback is always protected.
Power X Obj. Dia.: 10x42
Magnification: 10
Field of View: 330 ft. at 1000 yds.
Exit Pupil: 4.2 mm
Eye Relief: 15 mm
Dimensions: 5.9 x 5.6 in.
IPD Min 55 mm
IPD Max 75 mm
Close Focus: 6.7 ft.
Product Weight (oz): 21.4 oz.
Waterproofing Waterproof/Nitrogen Purged
Prism Material Phase-coated BaK-4
Lens Coatings Fully Multi-coated
Armoring Rubber
Eye Cups Twist-up with Detents
Design Type Roof Prism

Included In The Box

  • Case
  • Strap
  • Rainguard
  • Objective Lens Covers
Vortex offers VIP warranty which stands for a Very Important Promise to you, our customer. Vortex will repair or replace your product in the event it becomes damaged or defective—at no charge to you. If Vortex cannot repair your product, they will replace it with a product in perfect working order of equal or better physical condition. The VIP warranty does not cover loss, theft or deliberate damage to the product.

You see, it doesn't matter how it happened, whose fault it was, or where you purchased it. You can count on the VIP Warranty for all Vortex Optics scopes, rangefinders, binoculars, spotting scopes, tripods, and monoculars.

• Unlimited Lifetime Warranty
• Fully transferable
• No warranty card to fill out
• No receipt needed to hang on to

If you ever have a problem, no matter the cause, we promise to take care of you.

Vortex Versatility & Value

Outstanding Optical Performance
Redesigned Ergonomics
  • Phase-Correction and Multi-Layer prism coatings on a BaK-4 prism increases light transmission, brightness, contrast, and color fidelity

  • Good Field of View ranging 345ft. @ 1000 yds

  • Great Close-Focus at 5ft.

  • Lifetime, No-Fault Warranty*
  • Good Eye-Relief at 16mm for eyeglass wearers so you never have to struggle to see your target through the lenses.

  • A reliable rubber armored housing with a nicely textured grip helping to prevent damage from minor impacts.

  • Argon purged to prevent fogging.

  • 100% Waterproof

In Depth Features:
First and foremost, Vortex offers undeniably good customer service with their 'VIP Warranty' which stands for 'Very Important Promise' and is their guarantee of satisfaction. The VIP Warranty is a lifetime, NO-FAULT Warranty that does not require any forms to fill out or receipts - in the event your Vortex product becomes damaged or defective — they will repair it at no charge to you. If it cannot be repaired, they will replace it with a product in perfect working order of equal or better physical condition.

The VIP Warranty extends for all Vortex Optics binoculars, spotting scopes, rangefinders, riflescopes, prism scopes, red dots, tripods, and monoculars.


Multi-Layer Lens Coatings: This means that the lenses have received multiple layers of anti-reflective coatings on all air-to-glass surfaces which increase light transmission to produce a brighter image and therefore better low light performance. Anti-reflective coatings can make a really big difference on the brightness of the image produced. It is not unusual to look through binoculars with smaller objective lenses, but with higher quality anti-reflection coatings and seen them outperform binoculars with much larger objective lenses, but with fewer or no coatings. The diagram above shows how these coatings improve the transmission of light.


Phase Correction: When light enters a roof prism, the beam is split into two paths and the resultant beams are circularly polarized. The two paths have slightly different lengths, so the polarization axes are not in phase when the beams recombine. Phase correction coatings are applied to the shorter path to equalize the path lengths so that when the beams recombine the polarization axes are in phase. This produces a brighter and sharper image. The top half of this image shows the benefits of phase correction.


BaK-4 Prisms: First - Prisms are what let you see a correctly oriented image when you look through a pair of binoculars. There are two types of prisms in common use, Porro prisms and Roof prisms. Roof Prisms as with the Vortex Diamondback binoculars use BaK-4 prisms are the best in less expensive binoculars; they are made of superior optical glass that produces clearer images. These are what you want in your binoculars. BK-7 prisms are used in lower priced binoculars. These are satisfactory, but they are inferior to the BaK-4 prisms. Some manufacturers will not tell you what kind of prisms they use, usually because they are of inferior quality.

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