Brunton Eterna Full Size 8x45mm Binoculars is no longer available.

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Brunton Eterna Full Size 8x45mm Binoculars Item no longer available

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Item #BRU031-1

  • Your Price:
  • $269.98
  • + FREE Shipping
  • Oversized 45mm objective lens
  • 8x magnification
  • Waterproof, Fogproof and Nitrogen filled
  • Phase Coated
  • Twist Up Eyecups
  • Close focus of 8 feet
Questions? Let our experts help!
  • Description

    Naturally, the most powerful binoculars we make have a whole lot to offer. Designed around our stringent Eterna specifications, the new Full Size series is for those who want big glass in a rugged, ergonomic mid size frame. Not only is the objective sizable, but so is the power. Available in three powers - 8X, 11X and the High Power 15X, the highest fixed-power binocular we build - these Eternas are jewels when viewing over long distances. The benefits of big glass are often overshadowed by the enormous weight of most binoculars this size. Not in this case. The Eterna Full Size series is lightweight and nimble, making each model desirable for the long haul. The Eterna brings you a sharp image with the help of BaK-4 prism glass, state-of-the-art phase coating and a readiness to get the job done when it counts the most. Aside from all the bells and whistles, this binocular is a trooper through and through. See why the Eterna Full Size is the total package for your most grueling challenge.


  • BaK-4 prism glass
  • State-of-the-art phase coating
  • AL reflective coating
  • Emerald Fire full multi-coating
  • Multi-step eye relief system (eyeglass compatible)
  • Waterproof/fogproof
  • Nitrogen filled
  • Alloy frame w/ ergonomic body armor
  • Tripod/monopod compatible
  • Supplier SKU


    Shipping Restrictions

    Only ships in contiguous USA.

    What's Included

    neoprene Bino Glove, lens covers, neck strap

  • Dimensions & Specifications

    Binoculars Series

    Brunton Eterna Binoculars



    Close Focusing Distance

    8 ft.

    Dimensions (in)

    6 x 5.1 x 2.2

    Exit Pupil

    5.6 mm

    Eye Relief

    20 mm



    Field of View at 1000 Yards

    315 ft.

    Focus Type

    Center Focus



    Magnification Code


    Objective Lens Diameter

    45 mm

    Objective Lens Size Code


    Prism Type

    Roof Prism Binoculars


    Full Size Binoculars




    28 oz.

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    Default manufacturer warranty.

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

  • Customer Q&A

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    • Q1: Hi, I just bought a pair of Brunton Eterna 7x45 binoculars at the Port Anransas Whooping Crane Festival. My question is: How do I keep the objective lens covers on? Thanks. Gerald Nyberg

      A: They should fit snug right on the objective. if they do not i would say contact Brunton as it sounds like something isn't working correctly.

    • Q2: I have a pair of Brunton 7x42 Eterna Waterproof binoculars (4002W) that I bought a few years ago. The rubber eye cubs have fatigued and torn from use. Where can I get replacements? Thanks.

      A: You should be able to secure replacement eyecups directly from Brunton. Here's the email address so you can get the process underway:

    • Q3: I was just wondering why shipping is so long for the Brunton Eterna 8x45 binoculars (2 months??) I would like to purchase a pair but am wary about the delay

      A: The reason is that they are on backorder with Brunton as they wait to get them from their factories.

    1 - 5 of 12
    1 2

    Ask The Experts

    Have questions about an item or need advice on selecting the right optic? Our team of experts is here to help! Avid outdoor enthusiasts themselves, they've tested gear in the field and can provide personalized product recommendations for just about any activity, from birding and hunting to sports and travel.

    You can reach our Customer Support line at 1-800-246-6285. We're open 8 a.m. to 8 p.m. Central Time, Monday through Friday and 9 a.m. to 4 p.m. on Saturday.

    After hours? Drop us an email at We'll get back to you as soon as possible, usually within 1 business day.