1:Tri-band GSM900/1800/1900MHZ NETWORK 2:Utmost transfer data speed 236.8 kbps Support CS1-CS4,MCS1-MCS9 coding 3:USB Interface standard, play online ASAP plug Internal antenna, without any drive software support. 4: GRPS/EDGE alwayse online in the website anytime. 5: Serch the network automatic Receive and send message, call and receive phone function ect Count flux as per the online history record Easy to install and use,Log in quickly Supports WINDOWS 2000/NT/XP/Vista Optimize power supply management Low power conumption extend battery life