Key Features: 1. Browse the Internet 2. Send and Receive E-mails 3. Two-way SMS Technical Parameters: 1. EVDO 800MHz band - Receive Frequency:869.04～839.37 MHz - Transmit Frequency:824.04～848.97 MHz 2. Data Transmission up to 2.5Mbps Forward Link : Up to 2.4Mbps, Reverse Link : Up to 153Kbps 4. External removable antenna. 5. Operating System: Windows NT/4.0/SP/6a/98/ME/2000/XP 6. Control via AT-Command (S-707, and AifeiTech extended AT command ), IS-683A compliant over-air download/ capabilities 7. Interface: USB 1.0 8. R-UIM application toolkit 9. Supply voltage range 5.0 V 10. Low power consumption CDMA Max < 700mA CDMA Typical < 250mA Sleep < 2mA 11. Size: 94?1?2mm 12. Weight: 24.9g 13. Operation Temperature: -20 ? to +50 ? 14. Restricted Operation temperature: -35 ? to -30 ? and +60 ? to +70 ? Also we can supply PCMCIA EV-DO network card, if you are interesting, please contat with us, and we will send more detaio information to you, thanks!