H.264 HD (720P / 1080P) Recording HD SDI video input Independent video output (1HDMI, 1VGA) Individual channel recording Recording acc to the priovity HDD smart checking Auto delete mode Relay follower Digital Zoom in (Display / Playback) Dual stream Up to 25 users USB 2.0x2ea E-Mail with Jpeg image Auto DDNS with Mac address Mobile viewing with any smart phone