requestdevice.js

const options = {
  filters: [{services: ['ce060000-43e5-11e4-916c-0800200c9a66']}],
  optionalServices: [
    'ce060010-43e5-11e4-916c-0800200c9a66', // Information Service.
    'ce060020-43e5-11e4-916c-0800200c9a66', // Control Service.
    'ce060030-43e5-11e4-916c-0800200c9a66'  // Rowing Service.
  ]
};
navigator.bluetooth.requestDevice(options)
  .then(device => {
    // ...
  });