HDMI HD output, support up to 1920*1080 resolution. 1080P / 960P resolution. Backup Via Hard disk (up to 4T). Loop recording. (NO Hard disk in the package). 1 Audio in / 1ch audio out + 2pcs USB Port. P2P (cloud), no need any port fowarding for remote monitor anymore. Smartphone, PC remote surveillance. Motion detection and email alarm. No need complex wiring work, one network cable for all.