DESC: With high quality image intensifier tubes and fast lenses the MO-4 has very high brightness output. Not only does it have unbelievable light amplifi-cation ,it also provides superior clarity and high magnification.The MO-4 comes standard with our cutting edge "Smart" technology. This technology consists of a computerized proximity sensor, digital controls and a long-range infrared illuminator.The proximity sensor will automatically turn the unit on and off when it is brought to the viewing position.