Model No.:RTB6659
Main Features(Reference)

1.FSK/DTMF compatible automatically
2.1 original songs, 1 Koran, 8 normal rings and 5 chords music
3.Roff function
4.LCD contrast adjustment
5.Real clock LCD display
6.Calculator function
7.5 groups AZAN play and 3 groups of alarm clock
8.Number talking in English/Farsi/Arabic selectable
9.HF/Ring volume adjustment
10.5 –digit local area code, 3-digit PABX code
11.38 incoming and 9 outgoing call memories
12.Privacy function
13.Pre-dial number talking and 4 key tone selectable
14.20 one-touch memories
15.Flash time 100ms/120ms/180ms/300ms/600ms/1000ms selectable
16.Pre-dial, edit dialing number fucntion
17.Ring back fucntion
18.Hold on music
19.Against thief switch on/off
20.3-step lock
21.Do not disturb control