web bluetooth API, detect Chinese smartwatch CK12s and Nokia Body+ D8 Scale Services and Characteristics

bluetooth_healthy.js

/* Tested with these devices
   Smartwatch: https://www.aliexpress.com/item/JUNWER-Graphene-ECG-Smart-Band-CK12-Heart-Rate-Monitor-Blood-Pressure-Monitoring-Smart-Wriatband-IP67-Waterproof/32824701799.html
   Nokia Scale: https://www.amazon.com/Nokia-Body-Composition-Wi-Fi-Scale/dp/B071XW4C5Q
   */

//list of GATT servicess (excluding incompatibles or not recognized)
const gattServices = [
  'alert_notification',
  'automation_io',
  'battery_service',
  'blood_pressure',
  'body_composition',
  'bond_management',
  'continuous_glucose_monitoring',
  'current_time',
  'cycling_power',
  'cycling_speed_and_cadence',
  'device_information',
  'environmental_sensing',
  'fitness_machine',
  'generic_access',
  'generic_attribute',
  'glucose',
  'health_thermometer',
  'heart_rate',
  'http_proxy',
  //'human_interface_device',
  'immediate_alert',
  'indoor_positioning',
  'internet_protocol_support',
  'link_loss',
  'location_and_navigation',
  //'mesh_provisioning',
  //'mesh_proxy',
  'next_dst_change',
  'object_transfer',
  'phone_alert_status',
  'pulse_oximeter',
  //'reconnection_configuration',
  'reference_time_update',
  'running_speed_and_cadence',
  'scan_parameters',
  'transport_discovery',
  'tx_power',
  'user_data',
  'weight_scale'
];


const myServices = [
  0x0003, //smartwatch-CK12S
  0x3E01, //smartwatch-CK12S
  0x2C01, //smartwatch-CK12S
  '00000020-5749-5448-0005-000000000000' //Nokia Scale
];

const connectedDevices = {};

//available only in chrome for now https://caniuse.com/#feat=web-bluetooth

const addDevice = () => {
  if(navigator.bluetooth){
  
  //this should prompt the device selection popup
  const peripheral = await navigator.bluetooth.requestDevice({
    acceptAllDevices: true,
    optionalServices: [...myServices, ...gattServices]
  });
    
  connectedDevices[peripheral.name] = peripheral;
  
  const gatt = await peripheral.gatt.connect();
  const services = await gatt.getPrimaryServices();
  
    connectedDevices[peripheral.name].services = services;
    
  for(let service of services){
    const characteristics = await service.getCharacteristics();
    console.log(characteristics);
    
    for(let characteristic of characteristics){
      console.log(characteristic);
    }
  }
}
}

@ratacibernetica were you able to grab data from the Body+?