Camvtech Usa Wireless Bussines Class 1080P 16channel CCTV Surveillance Video Security, Supports: Hdmi, 2sata up 16TB,Ptz,Cloud Service Dropbox, P2P,Mobile Phone,Motion Detect 2. Hard Disk Storage Support 2-SATA up to 12-TB HDD; NO HDD Included 3. Support DVR Wireless, 3G & WIFI extension. 4. Support pre-alarm recording (before 10 sec), not lose any suspicious screen. 5. Support all kinds of mobile monitor (iPhone, Windows Mobile, BlackBerry, Symbian, Android) 1. Support 16ch 960h/720P/1080P/tvi/cvi/IP realtime recording resolution, ahead to WD1 High-Definition period, 2-way Motion Detect