GW Security Inc GW9208HDSDI HD-SDI 1CH 1080P Realtime Playback High Definition 8-Channel DVR (Black) 1080P realtime preview, 1CH 1080P realtime playback Support 8HDD Only connect to HD-SDI Cameras Support mobile surveillance by phones with Andriod, WinCE, Symbian, and iPhone Support E-SATA 1080P realtime preview, 1CH 1080P realtime playback Support 8HDD Only connect to HD-SDI Cameras Support mobile surveillance by phones with Android, WinCE, Symbian, and iPhone Support E-SATA