WD100 Specification               Item              Specification 1.Terminal type USB2.0 Full SPEED2.Network HSDPA /WCDMA/GSM/GPRS/EDGE                           Single-band UMTS/HSDPA /WCDMA 2100MHZ                           GSM: QUAD-Band 850/900/1,800/1,900MHZ3.Transmission HSDPA: Downlink: 7.2M bps, Uplink: 384K bps4.Memory               512MbNAND Flash + 256MbSDRAM5.Driver Installed Auto6.Transfer content Data7.SIM and USIM Support8.Message   SMS9.Antenna Internal 10.Weight 36g11.OS                 Windows 2000,Windows XP, Vista,Mac OS12.Operating Temperature -20 t0 +55 (℃)13.Storage Temperature -30 to +70 (℃)14.Size 80 x 35 x 12 mm