Compatible four frequencies digital technology:GSM850/900/1800/1900M Super-long standby time (at least 15days) Secure digital transmission of high-quality and clear voice calls LCD calendar, time, the real power show Support SMS,EMS ,GPRS functions The main menu including (the directory/ message / call records / Date /tone settings / Alarm) Support handfree functions With short power warning and automatic shutdown functions LCD Adjustable brightness 8 degree The call records (received/dialed/missed) 10/10/10 Support short message group sends function Support the call records to be deleted one and all functions Telephone directory capacity: 100 Tone adjustable/16chord rings /real sings Support the indiction of received signal function Support calculator-fee function Support incoming call number report and charge rate report function High quality Industry Module,support the stable and good functions. Other functions can be reset according customer needs