--- a/dom/bluetooth/BluetoothDevice.cpp
+++ b/dom/bluetooth/BluetoothDevice.cpp
@@ -25,23 +25,27 @@ NS_IMPL_CYCLE_COLLECTION_CLASS(Bluetooth
 NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(BluetoothDevice,
                                                nsDOMEventTargetHelper)
   NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mJsUuids)
 NS_IMPL_CYCLE_COLLECTION_TRACE_END
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(BluetoothDevice, 
                                                   nsDOMEventTargetHelper)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
-  NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(propertychanged)  
+  NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(propertychanged)
+  NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(connected)
+  NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(disconnected)
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
 
 NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(BluetoothDevice, 
                                                 nsDOMEventTargetHelper)
   tmp->Unroot();
-  NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(propertychanged)  
+  NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(propertychanged)
+  NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(connected)
+  NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(disconnected)
 NS_IMPL_CYCLE_COLLECTION_UNLINK_END
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(BluetoothDevice)
   NS_INTERFACE_MAP_ENTRY(nsIDOMBluetoothDevice)
   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(BluetoothDevice)
 NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
 
 NS_IMPL_ADDREF_INHERITED(BluetoothDevice, nsDOMEventTargetHelper)
@@ -165,19 +169,39 @@ BluetoothDevice::Create(nsPIDOMWindow* a
 
 void
 BluetoothDevice::Notify(const BluetoothSignal& aData)
 {
   if (aData.name().EqualsLiteral("PropertyChanged")) {
     // Get BluetoothNamedValue, make sure array length is 1
     BluetoothNamedValue v = aData.value().get_ArrayOfBluetoothNamedValue()[0];
     nsString name = v.name();
-    SetPropertyByValue(v);
-    nsRefPtr<BluetoothPropertyEvent> e = BluetoothPropertyEvent::Create(name);
-    e->Dispatch(ToIDOMEventTarget(), NS_LITERAL_STRING("propertychanged"));
+
+    if (name.EqualsLiteral("Connected")) {
+      bool isConnected = v.value();
+      nsRefPtr<nsDOMEvent> event = new nsDOMEvent(nullptr, nullptr);
+      nsresult rv;
+      if (isConnected) {
+        rv = event->InitEvent(NS_LITERAL_STRING("connected"), false, false);
+      } else {
+        rv = event->InitEvent(NS_LITERAL_STRING("disconnected"), false, false);
+      }
+      if (NS_FAILED(rv)) {
+        NS_WARNING("Failed to init the connected/disconnected event!!!");
+        return;
+      }
+
+      event->SetTrusted(true);
+      bool dummy;
+      DispatchEvent(event, &dummy);
+    } else {
+      SetPropertyByValue(v);
+      nsRefPtr<BluetoothPropertyEvent> e = BluetoothPropertyEvent::Create(name);
+      e->Dispatch(ToIDOMEventTarget(), NS_LITERAL_STRING("propertychanged"));
+    }
   } else {
 #ifdef DEBUG
     nsCString warningMsg;
     warningMsg.AssignLiteral("Not handling device signal: ");
     warningMsg.Append(NS_ConvertUTF16toUTF8(aData.name()));
     NS_WARNING(warningMsg.get());
 #endif
   }
@@ -226,8 +250,10 @@ BluetoothDevice::GetUuids(JSContext* aCx
   } else {
     NS_WARNING("UUIDs not yet set!\n");
     return NS_ERROR_FAILURE;
   }    
   return NS_OK;
 }
 
 NS_IMPL_EVENT_HANDLER(BluetoothDevice, propertychanged)
+NS_IMPL_EVENT_HANDLER(BluetoothDevice, connected)
+NS_IMPL_EVENT_HANDLER(BluetoothDevice, disconnected)

--- a/dom/bluetooth/BluetoothDevice.h
+++ b/dom/bluetooth/BluetoothDevice.h
@@ -70,13 +70,15 @@ private:
   nsString mName;
   uint32_t mClass;
   bool mConnected;
   bool mPaired;
   bool mIsRooted;
   nsTArray<nsString> mUuids;
 
   NS_DECL_EVENT_HANDLER(propertychanged)
+  NS_DECL_EVENT_HANDLER(connected)
+  NS_DECL_EVENT_HANDLER(disconnected)
 };
 
 END_BLUETOOTH_NAMESPACE
 
 #endif

--- a/dom/bluetooth/nsIDOMBluetoothDevice.idl
+++ b/dom/bluetooth/nsIDOMBluetoothDevice.idl
@@ -1,19 +1,21 @@
 /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
 /* vim: set ts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsIDOMEventTarget.idl"
 
-[scriptable, builtinclass, uuid(24c64513-9587-46c6-b718-bb9b9a754b0d)]
+[scriptable, builtinclass, uuid(647bb64c-8d45-4642-b86b-b3b80d4c8c25)]
 interface nsIDOMBluetoothDevice : nsIDOMEventTarget
 {
   readonly attribute DOMString address;
   readonly attribute DOMString name;
   [binaryname(DeviceClass)] readonly attribute unsigned long class;
   [implicit_jscontext] readonly attribute jsval uuids;
   readonly attribute bool connected;
   readonly attribute bool paired;
   attribute nsIDOMEventListener onpropertychanged;
+  attribute nsIDOMEventListener onconnected;
+  attribute nsIDOMEventListener ondisconnected;
 };