The Pabobo starry sky projector lets you see the starry sky without the melody. In fact, this type of nightlight offers a night lighting function with starry sky projection, and it can be used without activating any sound or melody, leaving only the soothing visual effect.

I don't know the melody; only one is played.

No, unfortunately not. Only with batteries.

No, the night light always switches off automatically after 45.