GT-1000G is a multi-function device. It supports accurate billing system, you can the charging rate and other parameters by network management. And it is with beautiful outlook, clear voice, steady performance, double LCD display. Clear Voice Double LCD display Adjust volume while talking Billing system, display talking duration and cost Charging indicated voice Display total talking amount after dialing several calls continually Inquiry the latest 255 call records, including dialed number, talking time, talking duration and amount Inquiry total amount per day, per month and for all calls Caller ID Redial and hand free dial numbers function Auto add local area code or prefix IP number Lock operator, lock card, lock unit and lock cell functions Forbid incoming calls and dialing Network management, easy to charging rate and parameters of unit Large capacity rechargeable battery, still works when power is cut off External or Internal antenna Keep real clock for long time, no need to re time while power on again