Cotier- 4 Channel Mini Portable Hd Hdmi P2p Network Video Recorder NVR (Support Onvif, 3g, Wifi) Support P2P Cloud Service, By Cloud Access,Cloud Monitoring, Cloud Forward, any terminal anytime and anywhere can get accessto the function of the IPC and NVR ; Can connect IP camera, IP speed domecamera and DVS; support Onvif protocol; Compatible with main brand IP cameras:AXIS, SONY, Panasonic, SANYO, BOSCH, SAMSUNG, Honeywell, VIVOTEK, Ambarella,HIKVISION, DAHUA, Histream, Grandstream, TOPSEE, Launch, WISION, HYVISION, WAPAetc.; Support megapixel HD network videopreview, storage and playback; ? Click any area and zoom in or zoom out onthe image by mouse; ? Support digital zooming under preview andplayback modes; ? Support search, playback and backup byevent; ? Support 4ch playback simultaneously. Preview channel can be switched to otherchannel randomly without changing the MAC which is convenient for the projectconstruction;