Questions about Samsung Gear Sport

Probably because nobody (or less) wants them.

Have you already looked here for the installation? https://support.spotify.com/de/listen_everywhere/smart_watches/samsung-fit-gear-2/ Since the function is available and can also be used, we have to leave the information as it is. As I understand the description, it only works if you use Spotify Premium.

The charging station is included :-)

According to Samsung, however, it is advertised as being suitable for swimming. Only not for "activities such as jumping into the pool, scuba diving, water skiing or similar high-speed water activities and/or deep water activities".

no

Unfortunately, this clock does not have a sim card slot.

https://support.deezer.com/hc/en-gb/articles/115004423629-Android-Wear Playback not really... more like remote control.