Music, weather, steps, e-mail, SMS, etc. With music, you can also jump to the next track. So you don't always have to have your mobile phone first. Works 99 % of the time. If nothing works anymore, restart the mobile phone and / or the clock and it works again. Since they run for a long time, the software may hang up somehow. But that is normal.

Yes, this is always displayed. I use spotify and it works without problems.