Bangle.beep(); not working

I have just published an update about this: https://www.kickstarter.com/projects/gfw/banglejs-the-hackable-smart-watch/posts/2792722

Short version: we've been screwed by the manufacturer. Looks like the vast majority of watches don't have a speaker in. However you can still get sound using the vibration motor as a speaker.

For instance uploading this:

require("Storage").write('.boot2',`Bangle.beep = function (time, freq) {
  return new Promise(function(resolve) {
    if ((0|freq)<=0) freq=4000;
    if ((0|time)<=0) time=200;
    if (time>5000) time=5000;
    analogWrite(D13,0.1,{freq:freq});
    setTimeout(function() {
      digitalWrite(D13,0);
      resolve();
    }, time);
  });
};`);

And restarting (long-press BTN3) will replace the beep function with one that uses the vibration motor. Not as loud but it'll still work ok.