... camera 2. emergency alarm 3. back-stage command system Hot Seller Portable mini Wireless 3G DVR Main Features:1. 3G CommunicationWCDMA/HSPA ... , 850/1900/2100MHz, Uplink 7.2M bqs.Built-in 3G Antenna ... compression,watching,3.2M Flash,128M DDR2. 23G CommunicationWCDMA/HSPA,850/1900/2100MHz, Uplink 7.2Mbps,built-in 3G antenna, FTP ...