1)3G Wireless Modem Function: Supports TF Cards(Micro SD), Voice, USSD. RF Radio
2)Frequency Interface
 The Modem Support 4 Band Frequencies GSM/GPRS/EDGE 850/900/1800/1900MHz
3)Support HSDPA up to 3.6Mbps, HSUPA up to 2Mbps 
4)Support UMTS/HSDPA/WCDMA 2100MHz
5)Modem Work on Most Of the Tablet PC's
6)Modem with external antenna