Seems like this app alternatives between something useful, and something not.
Now Playing. This control will show the current active track. You can skip back/forward and even adjust the volume from this widget. You can also do the exact same thing from your music player app, or from gesture on the right ear piece. So why include this?
Sound Quality Mode. Here you can choose between sound quality, or stable connection. Implying you can only have one or another . Stable connection for me is a significant drop in audio quality, so stick to just “Priority on Sound Quality” unless you experience issues.
DSEE HX. I had to look this up. DSEE is show for Digital Sound Enhancement Engine. Similar to Marantz’s M-DAX technology, it expands compressed music like MP3 to make it sound better. But unlike M-DAX, DSSE HX is just on/off and you cannot adjust any parameters.