And he keeps them yet ...

... The time during power failure :-)
Well, for the first eight minutes, at least. After 9min she's gone that time. All other settings (including alarm times) he had also noticed even after 30min without power.
If one pulls the plug during an ongoing 'sunrise' and inserting again within 8min, then the sunrise is from the front lot, so having the brightest darkness, reveille comes to alarm.
Ok, for serious getting to fixed time so come continues to be a normal battery alarm in addition to the application.

The power I have measured once briefly:
0.4W in clock display without anything,
0.7W with radio on Volume 10,
1.5W with radio volume to 20 (max)
1.6W with lamp brightness to one of 20 (without radio),
2.0W with lamp brightness to 11 from 20,
4,0W with lamp brightness to 16 from 20,
6.5W with lamp brightness to 18 from 20,
8,0W with lamp brightness to 19 from 20,
10,0W with lamp brightness to 20 of 20th

And one more info for sensitive people: The separating colon between hours and minutes flashes at 1Hz clock.