Retrieving state of the different SoC devices

Thanks - I'm afraid that would appear to be the best bet for now. I'll add that to the next firmware though.

In terms of removing listeners, you need to have a named function so you can remove it...

function magListener() {
  console.log("mag received");
  compassEventReceived = true;
}
Bangle.on('mag', magListener);
// Wait two seconds, that should be enough for each of the events to get raised once
setTimeout(() => { 
  Bangle.removeListener('mag', magListener);
}, 2000);