When I stop (pause) music and turn off the headset the watch starts automatically searching my headset in the background.
I have to manually stop the search under Settings->Sensors.
I think stopping the music by just hitting pause and turning off the headset without disconnecting it manually uses up a lot of battery life. The watch is searching 24/7 for the headset.
I have a really long battery life when I remember this.
So anyone with batterylife issues should check if the watch is searching for a headset in the background.
Maybe this should be improved somehow.... or is there an other way to disconnect the headset and stop the music in one step?