ATN Night Shadow-1 Night Vision Bi-ocular Gen 1 with built-in exclusive "Smart" Technology is a highly professional device. Unit has state of the art automatic On/Off feature - Proximity sensor turns bi-oculars ON when brought into the viewing position; 3x magnification with a built in long range IR Illuminator excellent choice for camping, boating, nature study, or law enforcement; all digital adjustments - auto brightness and gain control, bright light protection. Specialized multicoated optics provide extreme clarity in low-light situations. Unit can be converted into 6x binocular with optional ATN Doubler (not included). Water and fog resistant. Requires two 3V lithium batteries, included.