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>>Electrical spec.
* Working Frequency: GSM850/900/1800/1900MHz,
UMTS 850/900/2100MHz
* Output power:        Class 4 (+33dBm ±2dB) for EGSM900
Class 1 (+30dBm ±2dB) for GSM1800
Class E2 (+27dBm ± 3dB) for GSM 900 8-PSK
Class E2 (+26dBm +3 /-4dB) for GSM 1800 8-PSK
Class 3 (+24dBm +1/-3dB) for UMTS 2100, WCDMA FDD BdI
* SIM interface 3VDC 6pin,
* Power supply: 5 VDC via USB interface
* Ambient temperature: –20 ℃…+65 ℃
* Auto switch-off at +75 ℃
>>Data transmission spec.
HSUPA  3GPP R6，
  7.2Mbps downlink rate and 5.76Mbps uplink rate in max,
HSDPA  3GPP R5,
  7.2Mbps downlink rate and 384Kbps uplink rate in max,
  support UE CAT. [1-6], 11, 12
  support Coding scheme3GPP TS25.212
UMTS  Apply with WCDMA FDD
  PS 384 kbps downlink / 384 kbps uplink rate in max
  CS 64 kbps downlink / 64 kbps uplink rate in max
Support Voice call                                                                                         Support 32G TF card
Support OS:windows 2000,XP,Vista,Win7,UBUNTU 8.04,Mac os x 10.4 and later.