... with VGA 3. RS485, mouse, USB, 4CH Full D1 Digital Video Recorder Real-time DVR FeaturesWith H.264 High efficiency ... exact search(accurate to second)Space OccupationAudio: 28.8MB/H Video: 25~450MB/HVideo storageHard disk, , and net, SD ... and USB burnVideo Input8channel, BNC, 1.0Vp-p,75ΩVideo Output1 channel, BNC, 1.0Vp-p,75Ω and 1 ... (W*D*H)Weight3.5kg 4CH Full D1 Digital Video Recorder Real-time DVR