Professional quality night vision device (NVD), frequently used by tactical law enforcement teams and elite soldiers in the field * Versatile unit can be handheld, or mounted on head, helmet, or firearm; compatible with most infrared (IR) laser aiming and illuminating devices * Innovative Total Darkness Technology, with built-in IR illuminator for use when there"s no ambient light; Automatic Brightness Adjustment System constantly maintains IIT brightness levels * Front lens focusing ring adjusts for different distances, such as surveillance vs. map reading; diopter adjustment focuses eyepiece lens from -6 diopters to +2 diopters to allow for different eyesight levels * This item is restricted for sale to the state of California and outside the US; export outside the US is not allowed