BLE with BangleJS and GPS Device

I made an apache-cordova app, and I got this object in connect method:

{
   "name":"GS7X 354762118079554",
   "id":"80:EA:CA:00:3E:4E",
   "advertising":{
      
   },
   "rssi":-61,
   "services":[
      "1800",
      "1801",
      "0783b03e-8535-b5a0-7140-a304d2495cb7"
   ],
   "characteristics":[
      {
         "service":"1800",
         "characteristic":"2a00",
         "properties":[
            "Read"
         ]
      },
      {
         "service":"1800",
         "characteristic":"2a01",
         "properties":[
            "Read"
         ]
      },
      {
         "service":"1801",
         "characteristic":"2a05",
         "properties":[
            "Read",
            "Indicate"
         ],
         "descriptors":[
            {
               "uuid":"2902"
            }
         ]
      },
      {
         "service":"0783b03e-8535-b5a0-7140-a304d­2495cb7",
         "characteristic":"0783b03e-8535-b5a0-714­0-a304d2495cb8",
         "properties":[
            "Notify"
         ],
         "descriptors":[
            {
               "uuid":"2902"
            },
            {
               "uuid":"2901"
            }
         ]
      },
      {
         "service":"0783b03e-8535-b5a0-7140-a304d­2495cb7",
         "characteristic":"0783b03e-8535-b5a0-714­0-a304d2495cba",
         "properties":[
            "WriteWithoutResponse"
         ],
         "descriptors":[
            {
               "uuid":"2902"
            },
            {
               "uuid":"2901"
            }
         ]
      },
      {
         "service":"0783b03e-8535-b5a0-7140-a304d­2495cb7",
         "characteristic":"0783b03e-8535-b5a0-714­0-a304d2495cb9",
         "properties":[
            "Read",
            "WriteWithoutResponse",
            "Notify"
         ],
         "descriptors":[
            {
               "uuid":"2902"
            },
            {
               "uuid":"2901"
            }
         ]
      }
   ]
}

Notifications work. And this is the code in apache-cordova:

ID="80:EA:CA:00:3E:4E";
document.addEventListener('deviceready',­ onDeviceReady, false);

function onDeviceReady() {
    // Cordova is now initialized. Have fun!

    setTimeout(__ =>{
        ble.scan([], 5, device=> console.log(JSON.stringify(device)), failure=> console.log('FAILURE: ',failure));
    },2500);

    setTimeout(__ =>{
        ble.connect(ID, device=> console.log(JSON.stringify(device)), failure=> console.log('FAILURE: ',failure));
    },5000)
    document.getElementById('deviceready').c­lassList.add('ready');

    setTimeout(__ =>{
        var onData = function(buffer) {
            // Decode the ArrayBuffer into a typed Array based on the data you expect
            var data = new Uint8Array(buffer);
            console.log("Galileo data: " , JSON.stringify(data));
        }
        
        ble.startNotification(ID, "0783b03e-8535-b5a0-7140-a304d2495cb7", "0783b03e-8535-b5a0-7140-a304d2495cb8", onData, failure=> console.log('FAILURE: ',failure));
    },10000);
}

Do you have an idea?