Caller ID Telephone

1.Handfree function
2.Hold on music
3.Blue LCD Backlight
4.Ringer tone selectable

Model No.: RTB6680    
Main Features:(changeable)     

1.FSK/DTMF compatible        
2.38 incoming call and 5 outgoing call memories     
3.Area code and long-distance code setting     
4.8 kinds of ringer tone selectable     
5.3 groups of alarm function     
6.Real clock date & week display     
7.3-step lock function     
8.Hold on music     
9.Pre-dial, redial, auto redial function     
10.Flash time 1000ms/600ms/300ms/110ms selectable     
11.Calculator function      
12.Blue LCD backlight     
13.P/T dialing mode selectable     
14.H.F volume adjustable     
15.Anti-dialing function     
16.Thunder proof design