code advice on buzz()

It's working if it is changed to:

function planChime() {
  if (chimeTimer) {
    clearTimeout(chimeTimer);
  }
  chimeTimer = setTimeout(function() {
    Bangle.buzz().then(() => {
      setTimeout(function(){
         planChime();
      }, 2000);
      });
  }, 3600000 - (Date.now() % 3600000));
}