For example:
- Call list for missed calls
Listen to speakers -
- Number entry and select without lifting the handset
- Mute the ringtone sites
- Optical signal when a call
The voice quality is average, better than a cell phone, but in "transparent" I understand something else. In this point but also incorporated more factors than your own phone.
A real disadvantage and therefore deduction of points will receive the device for the listener. This could mE rest after much safer and firmer. From time to time "flying" down the before me. With a little self-made but you can also come to a solution here.