... ; 2.support SD card, max.32GB; bus monitor features:9-inch digital quad monitor with video recording function; the recording ... . Support date & time setting of the video Touch screen: 9 inch resistive touch screen available, can recognize up, down, left ... down4Volume/Value up5Menu selection down selector6Menu7Channel switch8Light Sensitive Resistor IC 9 inch lcd bus monitor built-in dvr with quad-view ...