Evertech Home Surveillance System Gold Series - 4 Channel/camera Home/office Security Camera System Network Remote Viewing Over Internet & 3g /4g & Cms &Cell Phones.With Weather-proof Night Vision Cctv Cameras. Embedded Linux Os and Built-in Web Server for Remote Viewing Over Internet /Smartphones /Lan /Tcp-ip. Compatible with MAC Os / Windows / Ipad /Iphone /Andorid /Blackberry /Symbian ... Built-in 500GB Hdd&Web Server.