The Viking RX 3.5x40 night vision binocular is the highest magnification in the Viking series and allows for incredibly detailed observation ability under the darkness of night. This exceptional binocular comes with a doubler lens that gives a 3.5x magnification which can be removed for a 2x binocular with a wide field of view. The Viking provides clear viewing in total darkness by utilizing a built-in IR infrared illuminator; when in use the illuminator emits a pulsing frequency that is so energy efficient it creates less battery drainage and prolongs battery life. The ergonomically designed rubberized body is surprisingly lightweight and can be taken on long expeditions both easily and comfortably. The Viking utilizes the revolutionary Eclipse™ Lens Cover System which uses flip-up covers that can be easily clipped back against the body of the binoculars and rotated out of the user’s viewing area while eliminating lens cap hassles. Pin holes in the lens caps allow the Viking to be used in the daytime when the caps are closed. Also featured is a dual diopter adjustment with central focusing knob and fully multi-coated optics. The Viking RX 3.5x40 is backed by Yukon’s Limited Lifetime Warranty.