Frequency range: GSM 900 MHz /1800MHz/1900MHz /850/1900MHz ?Internal or external antenna ?LCD display: large dot matrix LCD ?Support Chinese and English SMS ?Support GPRS (optional) ?Save the latest 10 missed, 10 received and 10 dialed calls ?Built-in Li-ion battery ?Talking time- 3hours; Standby time- 48hours ?Support network management (NMS) ?Lock phone, lock SIM Card ?Selectable volume, selectable ringers ?Prefix number dialing automatically ?Call divert, fast dialing ?PC Fax (optional)