The battery life the first telephone was in standby for approximately 14 days (without a running eco mode).
The device itself is comfortable to hold - not too heavy - not too easy.
Speech intelligibility is excelent! The receiver gain is very loud adjustable - and thus also ideal for people with hearing loss. (Even hearing aids suitable).
In particular, if you call an IP connection uses a Speedphone or you are telephoning internally by the HQ telephony (which dominates this phone) any communication a real treat.
The functionality is erlent very quickly by the fact "Keep it simple". The phone book can be maintained in the phone book or even in the Speedport.
The "noise when the menu switch" is on both devices. But does not interfere.
The Disadvantages:
1. Some devices were shipped with faulty batteries. A call to the T-Service has sufficient and there were new batteries sent (free) which also set the new device to about 14 days of standby. (Kudos to the service).
2. Four days beard, it is not funny to call. Here, the hair hanging like in the keys and are then clamped by the grip buttons. the twinge a little.
For this price, I am completely satisfied with this phone and it can only recommend warmest.
And for me it is incomprehensible to devalue a complete product just because of the device, the battery should be defective and replacing this gets if one notices this and reports.
Greeting Lars Schönheim