Swann 4 Channel 1080P HD Home Security DVR, 1TB HDD, Swann 4600 Series (Expand with Swann Pro-A855 Cameras) - SWDVR-44600H-US A state of the art & expandable surveillance system with 1080p full HD resolution Set & forget by recording continuously from 4 channels for 24 days+ onto a 1TB hard drive, even longer with motion detection Add pairs of Swanns PRO-A800 series cameras and enjoy High Definition recording & playback Save time & have peace of mind by easily locating incident video, then transfer to external storage via USB or network View live or playback video in high definition on your HDTV, LCD screen or monitor via HDMI connection or VGA port