H.264 ,H.264+& Dual-stream video compression Support HD-TVI, IPC,AHD and analog cameras with adaptive access Support Cloud storage(One Drive, Google Drive or Drop Box) VGA output at up to 1920×1080P resolution,HDMI output at up to 4K(3840x2160) resolution Long transmission distance over coax cable Up to 4816-ch synchronous playback at 1080p resolution playback at up to 256X speed. Support POS functions.