| Magnification |
8x |
| Objective Lens Diameter |
25 mm |
| Field of View |
270 feet/1000 yards |
| Eye Relief |
18.5 mm |
| Close Focus |
6.0 feet |
| Weight |
12.0 ounces |
| Dimensions (HxW) |
4.8 x 3.8 inches |
| Weatherproofing |
Waterproof/Fogproof |
Includes:
- BinoGlove covers
- Neck strap
- Brunton limited lifetime warranty
The small size of the Eterna makes it easy to take along on a vacation or an outdoor adventure. Don't worry about the weather. The Eterna is waterproof, fogproof, and built to last. Fully multi-coated optics optimize light transmission for bright views on cloudy days. 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. |
| Adjustable 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. |
