... 32/64 bit,MAC OS Slight, easy to use Wcdma gsm usb modem Main ChipQualcomm MSM6280 Frequency bandHSDPA/UMTS 850or900(optional) / 2100MHz EDGE ... /GPRS/GSM 850/900/1800/1900MHz Technical Standards HSDPA/WCDMA Sensitivity-104dBm ... , black, purple, blue Optional Qualcomm MSM6280 hsdpa/wcdma 7.2M usb modem