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Green roof-prism binoculars with harness case and folded stool chair

Vortex Optics

Vortex Optics Diamondback HD 12x50 Binocular Bundle with Stool

SKU CH-NJA3-4NF0E

12x50 roof-prism binoculars with 5.2° view and 271 ft at 1000 yd, bundled with a portable stool and cleaning cloth

  • 12x magnification with 50mm objectives for detailed distance viewing
  • HD optical system reduces chromatic aberration for true-to-life colour fidelity
  • 2° angle of view gives 271ft field at 1000 yards to track moving subjects
  • Fully multi-coated lenses boost light transmission for brighter, clearer images
  • Bundle includes GlassPak harness, stool, and cleaning cloth for all-day comfort

12x50 Diamondback HD Bundle

The Vortex Optics Diamondback HD bundle delivers 12x magnification through 50mm objective lenses for birding, hunting and scenic observation. It includes the roof-prism binocular, a GlassPak case and harness, lens covers, neck strap, lens cloth, a portable telescoping stool and a cleaning cloth. Everything needed for extended glassing sessions ships in one package.

HD Optical System and ArmorTek

The high-definition optical system uses select glass elements to reduce chromatic aberration and improve color fidelity. Fully multi-coated air-to-glass surfaces and dielectric multi-layer prism coatings increase light transmission for bright, edge-to-edge sharp images. Exterior lenses carry ArmorTek, an ultra-hard coating that resists scratches, oil and dirt during field use.

Waterproof Roof Prism Design

A waterproof, fogproof chassis protects internal optics from rain and humidity while the roof-prism layout keeps the instrument compact for pack carry. The bundled telescoping stool provides a stable seat without adding bulk, and the GlassPak harness distributes weight across the shoulders. Buyers needing higher magnification or larger objectives will need a different model.

Highlights

  • 12x magnification with 50mm objectives for detailed distance viewing
  • HD optical system reduces chromatic aberration for true-to-life colour fidelity
  • 2° angle of view gives 271ft field at 1000 yards to track moving subjects
  • Fully multi-coated lenses boost light transmission for brighter, clearer images
  • Bundle includes GlassPak harness, stool, and cleaning cloth for all-day comfort

Specifications

No published specifications for this item yet.

Questions about this item

How do I attach the GlassPak harness so the 12x50 binoculars stay secure while walking?

Thread the harness straps through the binocular's strap lugs, adjust the sliding buckles until the unit sits flat against your chest, then tighten the sternum strap to stop bounce.

When should I replace the ArmorTek coating on the 50mm objective lenses?

ArmorTek is a permanent ultra-hard layer; it does not wear off. Clean only with the supplied microfiber cloth and lens fluid to avoid micro-scratches that degrade light transmission.

At what distance does the 5.2° field of view become too narrow to follow fast-moving birds?

At 1000 yards the view spans 271 feet; beyond that the angular width stays 5.2° but the linear width grows, so tracking difficulty depends on target speed, not a fixed distance limit.

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