... 1-4 channels Car DVR H.264 Compression Support 3G, GPS, WIFI Support CIF,HD1,D1 resolution Support 2 SD Card Car DVRFunctionItemDescriptionRecording SystemChannel1-4 ... of: x 2,x4,x8,x16.GUIGraphical User InterfaceSetup system parameters with the remote control.AlarmInputSupport up to 4 channels ... on/off:1,Vehicle acc on/off---system auto power on after acc on, system power off according to the delay ...