Brunton 8x25 Eterna Compact Binocular

B&H # BR8X25E MFR # F-E825
Brunton 8x25 Eterna Compact Binocular


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Product Highlights

  • Phase-Corrected BaK-4 Roof Prisms
  • Fully Multicoated Optics
  • Dual-Hinge Bridge Configuration
  • Lightweight Polymer Housing
  • Center Focus Wheel
  • Waterproof/Fogproof Construction
  • Click-Stop Eyecups
  • Composite Armored Exterior
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The 8x25 Eterna Compact Binocular from Brunton is a pocket-sized yet durable multi-purpose binocular designed for a wide range of outdoor glassing tasks. Fully multicoated optics and phase-corrected BaK-4 prisms transmit bright images that are as rich in detail as they are in contrast. This model of the Eterna series is configured with 8x magnification, ideal for mid-range applications. The long eye relief, ergonomic composite body armor, and weatherproof construction make the Eterna a full-featured binocular ready for years of adventures. Brunton Outdoor Group has been designing and manufacturing outdoor sporting equipment since 1894; whether you are a bird watcher, hunter, or hiker, Brunton has been making gear for nature enthusiasts like you for over a century.

Compact and Lightweight Design
Brunton engineers created a multi-purpose binocular that is extremely convenient without compromising image quality. Slip the Eterna into your daypack, carry-on bag, or cargo pocket; the Eterna's dual-hinge design is ideal for nature enthusiasts, concert-goers, and sightseers.
Phase-Corrected BaK-4 Roof Prisms
Phase-aligning and highly reflective AL coatings enable the prisms to evenly transmit color across the visible spectrum. The resulting images pop with detail and lifelike saturation. Phase-correcting coatings also enhance image clarity and eliminate the distracting color fringing common in lower quality optics.
Fully Multicoated Optics
Brunton's proprietary Emerald Fire multilayer lens coatings minimize reflections within the optical channels and maximize contrast of transmitted images.
Waterproof/Fogproof Construction
Nitrogen purged and o-ring sealed housing protects the optics from fogging in harsh weather. Even in driving rain and suffocating humidity, the rugged construction ensures that the Eterna binocular will continue to display bright and clear images.
Click-Stop Eyecups
Multi-step twist-up rubber eyecups click in place and allow observers to optimize the eye relief and field of view.
UPC: 080078003981
Prism Type Roof
Magnification 8.0x
Objective Lens Diameter 25mm
Angle of View 4.9° (actual)
Field-of-View 270' @ 1000 yd / 89.64 m @ 1000 m
Minimum Focus Distance 6' / 1.83 m
Exit Pupil Diameter 3.1  mm
Eye Relief 18.5  mm
Interpupillary Adjustment Not Specified By Manufacturer
Dioptric Correction Not Specified By Manufacturer
Focus Type Center
Tripod Mount None
Dimensions 4.8 x 3.8 x 1.9" / 12.19 x 9.65 x 4.83  cm
Weight 12 oz / 340 g
Packaging Info
Box Dimensions (LxWxH) 8.6 x 7.7 x 4.1"
Brunton 8x25 Eterna Compact Binocular
  • BinoGlove
  • Neoprene Neck Strap
  • Lifetime Limited Warranty
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