Vortex Optics Kaibab HD 18x56 Binoculars with Uni-Daptor QR Tripod Adapter

£979.00✓ VIP Unconditional Lifetime Warranty


Out of stock due 2-4 working days

About this product

Model:  vortex_kaibab_hd_56_18x
Part Number:  KAI-5618

VIP Unconditional Lifetime Warranty

VIP Unconditional Lifetime Warranty Details

The Vortex Kaibab HD is a remarkably bright binocular for long distance viewing. 

An excellent choice for stargazing, observing ships at sea or similar. 

Features include premium HD (High Density) extra low dispersion glass and fully multicoated optics for high resolution views with negligible chromatic aberration. 

The large size and high magnification makes this a binocular best used with a tripod or monopod (a good quality tripod adapter is included). Nevertheless it still has rugged rubber armour and ArmorTek lens protection so can be used with confidence in the field, regardless of the weather! 


  • APO optical system: Apochromatic optical system Index matched with HD glass lenses correct colour across the entire visual spectrum.
  • HD lens elements: Premium (High Density) extra-low dispersion glass delivers the ultimate in resolution and colour fidelity, resulting in High Definition images.
  • XRPlus Fully Multi-Coated Lenses: Premium proprietary coatings deliver the highest level of light transmission with multiple anti-reflective coatings on all air-to-glass surfaces for maximum brightness.
  • Dielectric prism coatings: Multi-layer prism coatings provide bright, clear, color-accurate images.
  • Plasma Tech: Cutting edge application process provides unparalleled coating durability and performance.
  • Phase Correction: Used on roof prism models only—coating enhances resolution and contrast.


  • Roof Prisms: Valued for greater durability and a more compact size. Ergonomic top-hinge design.
  • 56mm Objective lenses: Large diameter 56mm lenses maximize low light performance.
  • Metal-Reinforced Eyecups: For high durability.
  • Waterproof: Optics are sealed with O-rings to prevent moisture, dust, and debris from entering the binocular.
  • Fogproof: Argon gas purging guarantees superior fogproof and waterproof performance.
  • Rubber Armour: Provides a secure, non-slip grip, and durable external protection.
  • ArmorTek: Exterior lenses are protected by ArmorTek — an ultrahard, scratch-resistant compound that repels oil, dirt and the corrosive salts of fingerprints.


  • Multi-position eyecups: Twist up and down to precise, intermediate settings to maximize custom fit for comfortable viewing with or without spectacles.
  • Diopter adjustment: Adjusts for differences in a user's eyes. Located on the right eyepiece.
  • Tripod adaptable: Compatible with a tripod adapter, allowing use on a tripod or car window mount. Tripod adapter included. 

What's in the box

  • Vortex Kaibab HD 18x56 Binoculars
  • Rainguard
  • Tethered objective lens covers
  • Comfort neck strap
  • Deluxe padded carry case
  • Uni-Daptor quick-release tripod adapter


Magnification 18 x
Objective Lens Diameter 56 mm
Eye Relief 16.4 mm
Exit Pupil 3.1 mm
Linear Field of View 194 feet/1000 yards
Angular Field Of View 3.7 degrees
Close Focus 23 feet / 7 m
Interpupillary Distance 60-76 mm
Height 7.7 inches / 196 mm
Width 5.7 inches / 145 mm
Weight 43.5 ounces / 1235g

Downloads / Manuals

The following manuals and downloads are available for this product:



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