The sound is clear and quality, far more than all wired phones I've used so far.
Setup is easy, just read the manual. The criticism by some did not seem at all justified in this regard.
The directory is very easy to complete.
Ergonomics is correct even if it is light (which is not a fault for me ...) we can talk for over an hour without discomfort. Of course one may prefer a slightly curved but the camera microphone picks up very well so that it is not a concern.
Power by rechargeable battery is a very good idea. Like all batteries lose their autonomy over time, they will be easy to replace.
Autonomy is just amazing. You will be tired of calling long before he emptied the load. The load bar not even down with a conversation an hour and a half there I am amazed.
Coordination between the handset and base requires very simple handling. Nothing to complain. plus you can buy additional sets to connect the database with other handsets and have always at hand camera without moving whatever room you are in and the signal passes through walls very well unless you live in a bunker (laughs).
The answering machine is easy to use with 25 minutes of recording. You have to understand the system but not complex, just read the instructions again.
The backlight is practical without being really pretty. The design can be improved but it remains sober and practical, this is what is asked ... You can use this phone in complete darkness.