Yes, the alarm clock is completely dark, it only lights up if you activate it with the button above for a few seconds. Highly recommended alarm clock for its ease of use and accuracy.

Yes, it can be activated manually via the snooze button on the top. Without permanent illumination, the batteries last almost forever.

Yes, the lighting can also be switched off completely.
So 3 modes:
- Lighting off
- Illumination night mode permanently on (when dark)
- Illumination brighter for approx. 5s at the touch of a button (snooze button)

Hello
The lighting is actually always off.
Only when the big button
button is pressed, it comes on for
for a few seconds.
On the back you can switch on Auto Light, then it lights up a little when it is dark.
it lights up a bit when it is dark. I have switched it off.
I am very satisfied with the alarm clock.