... with VGA 3. RS485, mouse, USB, 4CH Full D1 Digital Video Recorder Real-time DVR FeaturesWith H.264 High efficiency ... ,50 f/s), NTSC(525 line, 60 f/s)Surveillance qualityPAL,D1(704×576); NTSC, D1(704×480)Playback ... exact search(accurate to second)Space OccupationAudio: 28.8MB/H Video: 25~450MB/HVideo storageHard disk, , and net, SD ... (W*D*H)Weight3.5kg 4CH Full D1 Digital Video Recorder Real-time DVR