On my search I discovered the alarm clock Hedrstellerankündigung for this device. Of the described product characteristics of this alarm clock seemed to meet all the requirements. But I had to wait months until it was finally available. The wait is worth it, however; I was not disappointed.
This heralds a few minutes - that should be enough. Who is not yet there awake, comes too late anyway.
Furthermore, the service is very good: fast stop, fast turn on, clear visibility, whether and which of the two alarms is activated. The snooze function works as expected.
The readability of large numbers is impeccable, the digits lighting sometimes almost too bright (if one is illuminated in the night in total darkness) but better than too dark, right? There is also an automatic light that I did not use it.
An important "feature": if you press keys (Set alarm, turn on light, etc.) can not be heard beep! Nothing is more annoying than sleeping in bed together and the stupid thing beeps, just because you want to see the time at night at the clock and turns on the light. Or a person is sleeping, the other goes to bed later and will thereby still make its own alarm and it generates beep sounds churning. That bothers and annoys.
Actually, one would think that a bedroom alarm clock - except for the alarm - of course, a low device. All the more surprising how many give alarm yet unnecessary sounds.
Last but not least is the radio time course also an almost indispensable function in an alarm clock. Man wants to finally be able to rely on a proper alarm. Also meets the alarm.
Highly recommended!