Few buttons, just enough to use the phone. Loud and clear ringtone. The person on the other end of the line can be heard without interference, but it sounds somewhat distant.

Attention !!! If you want it for a telephone center, check the flash time it has !!! It is not adjustable and some models have 100ms, resulting in call transfer not working !!

For those who want a simple phone to do their job. Very powerful ringtone sound that fortunately has lower volume. It also has a wall mount. Very clear sound that you can hear and be heard! I got it for 12 euros and for the basic use I wanted it for, it is perfect!