Features: 1) Browses Internet with high speed 2) File transmission 3) Receives and sends E-mail 4) Receives and sends short message (SMS) 5) hot plugging and hot pull out 6) Support windows 2000/XP/Vista operation system Technical index: 1) Terminal type: USB standard interface 2) Working frequency: 850/900/1,800/1,900MHz 3) Transmission power: a) Class 4 (2W EGSM850/900MHz) b) Class 1 (1W DCS1,800/pcs 1,900MHz) 4) Multislot class: a) EDGE multislot class 10 236.8Kbps b) GPRS multislot class 10 53.6kbps 5) Transmission operation: data, GPRS, EDGE, SMS 6) Data transfer rate: more than 384.6kbps in maximum( Up link 236.8k, Down link 118.4k) 7) Terminal interface: USB 8) Power supply: 3.3 Vdc 9) Size: 26mm*93.5mm*10.5mm