Feature : Browse Internet with high speed. File Transmission. Receive/Send E-mail. Receive and Send Short Message (SMS). Receive and Send Fax. Technological Specification Support Network: CDMA2000-1X RTT, IS707-A, IS-A Interface: PCI Express Frequency: Send:824.640 - 848.370MHz Receive:869.640 - 893.370MHz Rate: 153.6Kbps/230.4Kbps Power management: intelligent Power management Voltage: DC3.3 V Channels: 21 Channel Channeal Range: 1.23MHz sensitivity: -106DBm Dimension: 75mm*34mm*5mm Weight:35g