1. H.264 Standalone DVR 2. Support SATA HardDisk,Mouse,USB*2,network 3. Audio, RS485, IE browse,15 languages 4.HDD,alarm H.264 main profile ... /Flash stick/movable HDD/SATA HDD/DVD-RWInterfaceVideo Input4channelVideo Output2 channel TV output BNC,1.0Vp-p,75Ω,1 VGA output ... (width) * 330MM (length) * 58MM (highly)Weight2.38KG 4CH Full D1 Real Time H.264 CCTV DVR