... , WIFI Support CIF,HD1,D1 resolution Support 2 SD Card Car DVRFunctionItemDescriptionRecording SystemChannel1-4 channelsResolutionSupport CIF,HD1,D1 resolution, compatible with ... playback.Support forward and backword play at the speed of: x 2,x4,x8,x16.GUIGraphical User InterfaceSetup system parameters with ... normally after power failure. 1-4 channels 3G WIFI Mobile Car DVR