Battery free version, FSK / DTMF system compatible.
12-digit LCD display, 28 incoming calls and 5 outgoing calls.
5-digit area code, Pre-dial and edit function.
8 kinds of ringing tone for selection.
Pulse and tone dialing mode compatible.
Ring volume switch for selection.
Hands free dialing and talking.
Thunder proof and anti dialing from parallel phones function.
LCD backlight function (need batteries).