The Alpha Optics AO-3351 is a dual channel night vision system. With a 51° field of view (FOV), it provides a large visual field without needing to move the goggles. The device uses advanced multi-coated optics and is built with a compact composite housing and integral infrared illuminator.. For hands-free operation, it includes head and helmet mounting options. It can be used as binoculars, monocular, or goggles. Operated by a single gain control knob, the AO-3351 utilizes features like a flip-up-turnoff, and a flip-down-turn-back-on option when mounted to a helmet.