Model No.:RTB6605
Main Features(Reference)

1.FSK/DTMF compatible
2.20 kinds of ring selectable
3.59 incoming and 16 outgoing call memories
4.10 groups of backlist function
5.17 one-touch and 10 two-touch memory
6.1 Manual and 1 Auto IP
7.VIP function
8.5-digit area code and 1-digit PABX code
9.Pre-dial and edition function
10.Two levels of LCD display adjustable
11.3-step lock
12.P/T, anti-thief switch on/off
13.Flash time 1000ms/600ms/300ms/110ms selectable
14.R key function
15.Calculator function
16.Alarm function
17.Backlight adjustment
18.4 levels of ring volume adjustment
19.MUTE function