DEFEWAY 4CH 960H H.264 DVR/HVR/NVR three in one Security Digital Video Recorder System 1000G hard drive 1 Step on the Internet:Support DEFEWAY eCloud,no need to router mapping,just 1 step go to the Internet with eCloud technology. Compression algorithm ideal:H.264 High Profile. Playback quality:Support all channel realtime recode,and multiple channel realtime playback synchronous. Main and Sub Stream:Dual Stream, Main stream is for local record , sub stream is for network transmission. Mobile monitor:Support iPhone, Windows Mobile, BlackBerry, Symbian,Android mobile monitor