... Specifications/Special Features:Hardware: CPU:DSP+MCU OS: Built-in OS Video: Compression format:Motion-JPEG-N Signal system:CMOS ... DDNS(free):Free DDNS boundedSuperiority:P2P technology, mobile viewCenter management software(free):1,4,9,16,25,36 or 64 multiple ... video display optional in one screen, support record, alarm, remote playback on records and other management functions.