Swann 4 Channel 1080P HD DVR Home Security System with 4 Bullet Cameras - Contains 1 x DVR4-4600, 1TB HDD/ 4 x Pro A855 Cameras, White - SWDVK-446004-US A state of the art surveillance system with 1080p Full HD video resolution Set & forget by recording continuously from 4 channels for 24 days+ onto a 1TB hard drive, even longer with motion detection Seeing is believing with 4 x 1080p HD Cameras (2 Megapixel) Save time & have peace of mind by easily locating incident video, then transfer to external storage via USB or network Connect in minutes using Swanlike Peer-to-Peer easy network connection software Refer user guide below.