Brunton Eterna ELO 15x51 Roof Prism Binocular

Sale Price: $369.99
List Price: $590.00
You Save: $220.01 (37%)
Brunton Eterna ELO 15x51 Roof Prism Binocular
Magnification 15x
Objective Lens Diameter 51 mm
Field of View 200 feet/1000 yards
Eye Relief 15.0 mm
Close Focus 11.0 feet
Weight 32.0 ounces
Dimensions (HxW) 6.7 x 5.2 inches
Weatherproofing Waterproof/Fogproof


  • BinoGlove cover
  • Neck strap

Conquering long distances is a specialty of the Brunton Eterna 51mm objective lens binocular. The benefits of big glass are often overshadowed by an enormous weight—not a problem with the Eterna. Fully multi-coated optics optimize the Eterna's light transmission for bright views on cloudy days. The Eterna is waterproof, fogproof, and built to last. Brunton covers the Eterna with a limited lifetime warranty.

Optical Features
Fully Multi-coated Lenses Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Emerald Fire™ coatings.
Phase Correction Enhances resolution and contrast through roof prisms.
BaK-4 Prisms Optimize light transmission.
Construction Features
Roof Prisms Appreciated for a streamlined shape and durability.
Rubber Armoring Provides a secure, non-slip grip.
Multi-position Eyecups Twist up and down for comfortable viewing with or without eyeglasses.
Center Focus Wheel Adjusts both binocular barrels at the same time.
Right Eye Diopter Adjusts for differences in a user's eyes. Located by the right eyepiece
Tripod Adaptable Can be mounted using standard ¼-inch threading. Adapter sold separately.
Design Features
Waterproof Optics are sealed with O-rings to prevent moisture, dust, and debris from getting inside the binocular.
Fogproof Barrels are filled with nitrogen gas to inhibit internal fogging.