1. H.264 Standalone DVR 2. Support SATA HardDisk,Mouse,USB*2,network 3. Audio, RS485, IE browse ... Blackberry, Android, Symbian and Windows mobile, module by USB 2.0 portMultiple control methods:front panel,IR remote ... controller,USB mouseSupport 2*USB 2.0 port for mouse,backup,DVD- ... 330MM (length) * 58MM (highly)Weight2.38KG 4CH Full D1 Real Time H.264 CCTV DVR