Enterprice B-Class 16 channel 3/4/5 MP recording and playback simultaneously TVI/CVI/AHD/IP/Analog All format compatible Full AHD solutions Support multy channel and playback 1. AHD High Definition , Support 4MP camera system and all other modes:All model at the same time 2. Hard Disk Storage Support 2 SATA upto 12TB HDD: NO HDD Included 3. In order to see the maximum effective pixels with Camvtech Cameras (1.3MP AHD camera), 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)