1.4ch Real Time DVR 2.3G mobile phone view 3.Stable hard disk 4.Built-in DDNS domain name ... /Symbian/iPhone/Android/BlackBerry)·Powerful CMS·Support 8 users network view simultaneously·Support Dual-stream·Support SMTP,UPNP, DDNS, PPPOE, etc ... (H) mmWeight(without hard disk)2.6KG 3G Mobile Phone View H.264 Network DVR(D2104A)