... interface, of which one can record speed4. Supporting 4 way real-time recording, with three solutions (CIF, HD1, D1). Also ... . With professional watch dog design, automatically detection when system crashing, so as to protect the video data securely ... hard disc (2.5inch) 5Recording ModeVideo file formatMP4Booting recording, time recording, alarm recording, manual recording.6PreviewQuad screen, single ...