DESC: Brunton Eterna Fullsize 8X45 E845 Binoculars. Naturally, the most powerful binoculars Brunton makes have a whole lot to offer. Designed around the stringent Eterna specifications, the 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.