The agm unvg-51 is a dual-channel night vision system.The unvg-51 uses advanced multi-coated optics with an expanded 51 degree field of view and is built to last with a compact composite housing.The device can be outfitted with a gen 2+ or gen 3 high-performance image intensifier tube (iit).The unvg is also equipped with manual gain control, which adjusts the image brightness, providing the highest possible image quality even in changing light conditions.The independent movement of the tube pods allows for single or dual eye configurations for increased operational flexibility.Each tube automatically turns off when its pod is turned sideways.Operating from a single aa alkaline battery, the unvg can run up to 15 hours.With an external battery pack (included), the operating time increases to 50 hours.Also equipped with an integral infrared illuminator for reading in the dark.The device can be installing to a either standard dovetail type headset and helmet mount.Includes: night vision goggles, external battery pack, connecting cable with battery adapter, demist shield (2), sacrificial window (2), neck strap, carrying case, lens cloth, user manual, aa batteryResolution: 51-64 lp/mmMagnification: 1xField Of View: 51 DegreesBattery Size: AA/CR123AWeight: 1.20 lbsFocus Range: 0.25m to InfinityIntensifier Tube: Gen 2+ White Phosphor Level 1Diopter Adjustment: -6/+2Infrared Illuminator: YesBattery Life: 15-50 hrs