GSM Fixed Desktop Phone With Dual Sim Hands Free Function

1) Applies to E-GSM 900/1800Mhz mobile communication network 2) Easy to install and easy to maintain 3) Clear voice and no noise 4) Caller ID (CLI display) 5) Stores 10 received / 10 dialed / 10 missed call records 6) Authentic signal, battery volume, time and date display 6) Built-in back-up Li-ion battery: 48 hours standby / 3 hours talk 7) English LCD and case 8) 12 groups chord ringers for incoming call 9) Hands free function 10) Metering function for payphone purpose 11) Speak number in English function (option) 12) Strong signal by high gain antenna (3.5dB - 5dB) 13) IP pre-setting for save call cost 14) Like ordinary hardwire-line telephone operation method