ATN Night Shadow II Generation Night Vision Binocular comes standard with ATN 's cutting edge "Smart" technology. This technology consist of a computerized proximity sensor, digital controls and a long-range infra-red illuminator. The proximity sensor will automatically turn the unit on and off when it is brought to the viewing position. This helps save your battery life and the life of the unit itself. The digital controls allow you to activate all of the features of the ATN Night Shadow with an easy push of a button. ATN also built a powerful infra-red illuminator into the scope. This allows you to see even in total darkness with outstanding clarity. It is dark. You can barely see your hand in front of your face. You bring your Night Shadow Night Vision Device up to your eyes and turn it on. Suddenly, in green-hued clarity, the entire scene is like day. This ATN night vision device is perfect for Camping, Boating, Nature study, or Law Enforcement,there is simply no betterBi-ocular night vision device on the market. Two year warranty is provided by ATN.