Detailed Product Description Quad - Band: GSM 900/1800/1900MHzEDGE(E-GPRS): 3GPP Release4, class 10, 384Kbps, up to 236.8 Kbps DL and 118.4Kbps ULGSM/GPRS: 3GPP Release4, class 12, 115Kbps,up to 85.6 Kbps DL and 42.8 Kbps ULCompatible systems: Win2000/ XP/VISTAFunction:SMS, Voice, Internet connecting Funtion Support for Multiple APNs ,SMS (send and receive) ,Dial-up networking