diff --git a/components/atoms/static_atoms.txt b/components/atoms/static_atoms.txt
index 2330efe2017..153c0962eeb 100644
--- a/components/atoms/static_atoms.txt
+++ b/components/atoms/static_atoms.txt
@@ -77,3 +77,4 @@ toggle
 statechange
 controllerchange
 fetch
+characteristicvaluechanged
diff --git a/components/script/dom/bluetooth.rs b/components/script/dom/bluetooth.rs
index afee568d735..0cb9005e282 100644
--- a/components/script/dom/bluetooth.rs
+++ b/components/script/dom/bluetooth.rs
@@ -11,12 +11,13 @@ use core::clone::Clone;
 use dom::bindings::cell::DOMRefCell;
 use dom::bindings::codegen::Bindings::BluetoothBinding::{self, BluetoothDataFilterInit, BluetoothLEScanFilterInit};
 use dom::bindings::codegen::Bindings::BluetoothBinding::{BluetoothMethods, RequestDeviceOptions};
+use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::codegen::UnionTypes::StringOrUnsignedLong;
 use dom::bindings::error::Error::{self, NotFound, Security, Type};
 use dom::bindings::error::Fallible;
 use dom::bindings::js::{JS, MutHeap, Root};
 use dom::bindings::refcounted::{Trusted, TrustedPromise};
-use dom::bindings::reflector::{Reflectable, Reflector, reflect_dom_object};
+use dom::bindings::reflector::{Reflectable, reflect_dom_object};
 use dom::bindings::str::DOMString;
 use dom::bluetoothadvertisingdata::BluetoothAdvertisingData;
 use dom::bluetoothdevice::BluetoothDevice;
@@ -24,6 +25,7 @@ use dom::bluetoothremotegattcharacteristic::BluetoothRemoteGATTCharacteristic;
 use dom::bluetoothremotegattdescriptor::BluetoothRemoteGATTDescriptor;
 use dom::bluetoothremotegattservice::BluetoothRemoteGATTService;
 use dom::bluetoothuuid::{BluetoothServiceUUID, BluetoothUUID};
+use dom::eventtarget::EventTarget;
 use dom::globalscope::GlobalScope;
 use dom::promise::Promise;
 use ipc_channel::ipc::{self, IpcSender};
@@ -84,7 +86,7 @@ impl<Listener: AsyncBluetoothListener + Reflectable> BluetoothResponseListener f
 // https://webbluetoothcg.github.io/web-bluetooth/#bluetooth
 #[dom_struct]
 pub struct Bluetooth {
-    reflector_: Reflector,
+    eventtarget: EventTarget,
     device_instance_map: DOMRefCell<HashMap<String, MutHeap<JS<BluetoothDevice>>>>,
     service_instance_map: DOMRefCell<HashMap<String, MutHeap<JS<BluetoothRemoteGATTService>>>>,
     characteristic_instance_map: DOMRefCell<HashMap<String, MutHeap<JS<BluetoothRemoteGATTCharacteristic>>>>,
@@ -94,7 +96,7 @@ pub struct Bluetooth {
 impl Bluetooth {
     pub fn new_inherited() -> Bluetooth {
         Bluetooth {
-            reflector_: Reflector::new(),
+            eventtarget: EventTarget::new_inherited(),
             device_instance_map: DOMRefCell::new(HashMap::new()),
             service_instance_map: DOMRefCell::new(HashMap::new()),
             characteristic_instance_map: DOMRefCell::new(HashMap::new()),
@@ -382,6 +384,9 @@ impl BluetoothMethods for Bluetooth {
         // TODO(#4282): Step 3-5: Reject and resolve promise.
         return p;
     }
+
+    // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetooth-onavailabilitychanged
+    event_handler!(availabilitychanged, GetOnavailabilitychanged, SetOnavailabilitychanged);
 }
 
 impl AsyncBluetoothListener for Bluetooth {
diff --git a/components/script/dom/bluetoothdevice.rs b/components/script/dom/bluetoothdevice.rs
index 39706befad6..4f66218dfb4 100644
--- a/components/script/dom/bluetoothdevice.rs
+++ b/components/script/dom/bluetoothdevice.rs
@@ -4,18 +4,20 @@
 
 use dom::bindings::codegen::Bindings::BluetoothDeviceBinding;
 use dom::bindings::codegen::Bindings::BluetoothDeviceBinding::BluetoothDeviceMethods;
+use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::js::{JS, Root, MutHeap, MutNullableHeap};
-use dom::bindings::reflector::{Reflectable, Reflector, reflect_dom_object};
+use dom::bindings::reflector::{Reflectable, reflect_dom_object};
 use dom::bindings::str::DOMString;
 use dom::bluetooth::Bluetooth;
 use dom::bluetoothadvertisingdata::BluetoothAdvertisingData;
 use dom::bluetoothremotegattserver::BluetoothRemoteGATTServer;
+use dom::eventtarget::EventTarget;
 use dom::globalscope::GlobalScope;
 
 // https://webbluetoothcg.github.io/web-bluetooth/#bluetoothdevice
 #[dom_struct]
 pub struct BluetoothDevice {
-    reflector_: Reflector,
+    eventtarget: EventTarget,
     id: DOMString,
     name: Option<DOMString>,
     ad_data: MutHeap<JS<BluetoothAdvertisingData>>,
@@ -30,7 +32,7 @@ impl BluetoothDevice {
                          context: &Bluetooth)
                          -> BluetoothDevice {
         BluetoothDevice {
-            reflector_: Reflector::new(),
+            eventtarget: EventTarget::new_inherited(),
             id: id,
             name: name,
             ad_data: MutHeap::new(ad_data),
@@ -80,4 +82,7 @@ impl BluetoothDeviceMethods for BluetoothDevice {
             BluetoothRemoteGATTServer::new(&self.global(), self)
         })
     }
+
+    // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothdeviceeventhandlers-ongattserverdisconnected
+    event_handler!(gattserverdisconnected, GetOngattserverdisconnected, SetOngattserverdisconnected);
 }
diff --git a/components/script/dom/bluetoothremotegattcharacteristic.rs b/components/script/dom/bluetoothremotegattcharacteristic.rs
index 390878342db..9640ba95d52 100644
--- a/components/script/dom/bluetoothremotegattcharacteristic.rs
+++ b/components/script/dom/bluetoothremotegattcharacteristic.rs
@@ -13,15 +13,18 @@ use dom::bindings::codegen::Bindings::BluetoothRemoteGATTCharacteristicBinding::
     BluetoothRemoteGATTCharacteristicMethods;
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServerBinding::BluetoothRemoteGATTServerMethods;
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServiceBinding::BluetoothRemoteGATTServiceMethods;
+use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::error::Error::{self, InvalidModification, Network, NotSupported, Security};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, MutHeap, Root};
-use dom::bindings::reflector::{Reflectable, Reflector, reflect_dom_object};
+use dom::bindings::reflector::{Reflectable, reflect_dom_object};
 use dom::bindings::str::{ByteString, DOMString};
 use dom::bluetooth::{AsyncBluetoothListener, response_async};
 use dom::bluetoothcharacteristicproperties::BluetoothCharacteristicProperties;
 use dom::bluetoothremotegattdescriptor::BluetoothRemoteGATTDescriptor;
 use dom::bluetoothremotegattservice::BluetoothRemoteGATTService;
 use dom::bluetoothuuid::{BluetoothDescriptorUUID, BluetoothUUID};
+use dom::eventtarget::EventTarget;
 use dom::globalscope::GlobalScope;
 use dom::promise::Promise;
 use ipc_channel::ipc::IpcSender;
@@ -35,7 +38,7 @@ pub const MAXIMUM_ATTRIBUTE_LENGTH: usize = 512;
 // https://webbluetoothcg.github.io/web-bluetooth/#bluetoothremotegattcharacteristic
 #[dom_struct]
 pub struct BluetoothRemoteGATTCharacteristic {
-    reflector_: Reflector,
+    eventtarget: EventTarget,
     service: MutHeap<JS<BluetoothRemoteGATTService>>,
     uuid: DOMString,
     properties: MutHeap<JS<BluetoothCharacteristicProperties>>,
@@ -50,7 +53,7 @@ impl BluetoothRemoteGATTCharacteristic {
                          instance_id: String)
                          -> BluetoothRemoteGATTCharacteristic {
         BluetoothRemoteGATTCharacteristic {
-            reflector_: Reflector::new(),
+            eventtarget: EventTarget::new_inherited(),
             service: MutHeap::new(service),
             uuid: uuid,
             properties: MutHeap::new(properties),
@@ -255,6 +258,9 @@ impl BluetoothRemoteGATTCharacteristicMethods for BluetoothRemoteGATTCharacteris
                                                  sender)).unwrap();
         return p;
     }
+
+    // https://webbluetoothcg.github.io/web-bluetooth/#dom-characteristiceventhandlers-oncharacteristicvaluechanged
+    event_handler!(characteristicvaluechanged, GetOncharacteristicvaluechanged, SetOncharacteristicvaluechanged);
 }
 
 impl AsyncBluetoothListener for BluetoothRemoteGATTCharacteristic {
@@ -297,6 +303,7 @@ impl AsyncBluetoothListener for BluetoothRemoteGATTCharacteristic {
             BluetoothResponse::ReadValue(result) => {
                 let value = ByteString::new(result);
                 *self.value.borrow_mut() = Some(value.clone());
+                self.upcast::<EventTarget>().fire_bubbling_event(atom!("characteristicvaluechanged"));
                 promise.resolve_native(promise_cx, &value);
             },
             BluetoothResponse::WriteValue(result) => {
diff --git a/components/script/dom/bluetoothremotegattservice.rs b/components/script/dom/bluetoothremotegattservice.rs
index 69593e2c390..2f2206eb89a 100644
--- a/components/script/dom/bluetoothremotegattservice.rs
+++ b/components/script/dom/bluetoothremotegattservice.rs
@@ -8,15 +8,17 @@ use dom::bindings::codegen::Bindings::BluetoothDeviceBinding::BluetoothDeviceMet
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServerBinding::BluetoothRemoteGATTServerMethods;
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServiceBinding;
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServiceBinding::BluetoothRemoteGATTServiceMethods;
+use dom::bindings::codegen::Bindings::EventHandlerBinding::EventHandlerNonNull;
 use dom::bindings::error::Error::{self, Network, Security};
 use dom::bindings::js::{JS, MutHeap, Root};
-use dom::bindings::reflector::{Reflectable, Reflector, reflect_dom_object};
+use dom::bindings::reflector::{Reflectable, reflect_dom_object};
 use dom::bindings::str::DOMString;
 use dom::bluetooth::{AsyncBluetoothListener, response_async};
 use dom::bluetoothcharacteristicproperties::BluetoothCharacteristicProperties;
 use dom::bluetoothdevice::BluetoothDevice;
 use dom::bluetoothremotegattcharacteristic::BluetoothRemoteGATTCharacteristic;
 use dom::bluetoothuuid::{BluetoothCharacteristicUUID, BluetoothServiceUUID, BluetoothUUID};
+use dom::eventtarget::EventTarget;
 use dom::globalscope::GlobalScope;
 use dom::promise::Promise;
 use ipc_channel::ipc::IpcSender;
@@ -26,7 +28,7 @@ use std::rc::Rc;
 // https://webbluetoothcg.github.io/web-bluetooth/#bluetoothremotegattservice
 #[dom_struct]
 pub struct BluetoothRemoteGATTService {
-    reflector_: Reflector,
+    eventtarget: EventTarget,
     device: MutHeap<JS<BluetoothDevice>>,
     uuid: DOMString,
     is_primary: bool,
@@ -40,7 +42,7 @@ impl BluetoothRemoteGATTService {
                          instance_id: String)
                          -> BluetoothRemoteGATTService {
         BluetoothRemoteGATTService {
-            reflector_: Reflector::new(),
+            eventtarget: EventTarget::new_inherited(),
             device: MutHeap::new(device),
             uuid: uuid,
             is_primary: is_primary,
@@ -217,6 +219,15 @@ impl BluetoothRemoteGATTServiceMethods for BluetoothRemoteGATTService {
                                                     sender)).unwrap();
         return p;
     }
+
+    // https://webbluetoothcg.github.io/web-bluetooth/#dom-serviceeventhandlers-onserviceadded
+    event_handler!(serviceadded, GetOnserviceadded, SetOnserviceadded);
+
+    // https://webbluetoothcg.github.io/web-bluetooth/#dom-serviceeventhandlers-onservicechanged
+    event_handler!(servicechanged, GetOnservicechanged, SetOnservicechanged);
+
+    // https://webbluetoothcg.github.io/web-bluetooth/#dom-serviceeventhandlers-onserviceremoved
+    event_handler!(serviceremoved, GetOnserviceremoved, SetOnserviceremoved);
 }
 
 impl AsyncBluetoothListener for BluetoothRemoteGATTService {
diff --git a/components/script/dom/webidls/Bluetooth.webidl b/components/script/dom/webidls/Bluetooth.webidl
index b925e0b0b25..de2b95c3fbb 100644
--- a/components/script/dom/webidls/Bluetooth.webidl
+++ b/components/script/dom/webidls/Bluetooth.webidl
@@ -28,9 +28,10 @@ dictionary RequestDeviceOptions {
 };
 
 [Pref="dom.bluetooth.enabled"]
-interface Bluetooth {
+interface Bluetooth : EventTarget {
 //  [SecureContext]
 //  readonly attribute BluetoothDevice? referringDevice;
+  attribute EventHandler onavailabilitychanged;
 //  [SecureContext]
 //  Promise<boolean> getAvailability();
 //  [SecureContext]
diff --git a/components/script/dom/webidls/BluetoothDevice.webidl b/components/script/dom/webidls/BluetoothDevice.webidl
index 34a77230850..0e7843db109 100644
--- a/components/script/dom/webidls/BluetoothDevice.webidl
+++ b/components/script/dom/webidls/BluetoothDevice.webidl
@@ -5,7 +5,7 @@
 // https://webbluetoothcg.github.io/web-bluetooth/#bluetoothdevice
 
 [Pref="dom.bluetooth.enabled"]
-interface BluetoothDevice {
+interface BluetoothDevice : EventTarget {
     readonly attribute DOMString id;
     readonly attribute DOMString? name;
     // TODO: remove this after BluetoothAdvertisingEvent implemented.
@@ -17,7 +17,12 @@ interface BluetoothDevice {
     // readonly attribute boolean watchingAdvertisements;
 };
 
+[NoInterfaceObject]
+interface BluetoothDeviceEventHandlers {
+  attribute EventHandler ongattserverdisconnected;
+};
+
 // BluetoothDevice implements EventTarget;
-// BluetoothDevice implements BluetoothDeviceEventHandlers;
+BluetoothDevice implements BluetoothDeviceEventHandlers;
 // BluetoothDevice implements CharacteristicEventHandlers;
 // BluetoothDevice implements ServiceEventHandlers;
diff --git a/components/script/dom/webidls/BluetoothRemoteGATTCharacteristic.webidl b/components/script/dom/webidls/BluetoothRemoteGATTCharacteristic.webidl
index d1d937475b4..55d7bf0a43c 100644
--- a/components/script/dom/webidls/BluetoothRemoteGATTCharacteristic.webidl
+++ b/components/script/dom/webidls/BluetoothRemoteGATTCharacteristic.webidl
@@ -5,7 +5,7 @@
 // https://webbluetoothcg.github.io/web-bluetooth/#bluetoothremotegattcharacteristic
 
 [Pref="dom.bluetooth.enabled"]
-interface BluetoothRemoteGATTCharacteristic {
+interface BluetoothRemoteGATTCharacteristic : EventTarget {
   readonly attribute BluetoothRemoteGATTService service;
   readonly attribute DOMString uuid;
   readonly attribute BluetoothCharacteristicProperties properties;
@@ -21,5 +21,10 @@ interface BluetoothRemoteGATTCharacteristic {
   Promise<BluetoothRemoteGATTCharacteristic> stopNotifications();
 };
 
-//BluetootRemoteGATTCharacteristic implements EventTarget;
-//BluetootRemoteGATTCharacteristic implements CharacteristicEventHandlers;
+[NoInterfaceObject]
+interface CharacteristicEventHandlers {
+  attribute EventHandler oncharacteristicvaluechanged;
+};
+
+// BluetoothRemoteGATTCharacteristic implements EventTarget;
+BluetoothRemoteGATTCharacteristic implements CharacteristicEventHandlers;
diff --git a/components/script/dom/webidls/BluetoothRemoteGATTService.webidl b/components/script/dom/webidls/BluetoothRemoteGATTService.webidl
index 715c2acbe1e..c39dcc1447a 100644
--- a/components/script/dom/webidls/BluetoothRemoteGATTService.webidl
+++ b/components/script/dom/webidls/BluetoothRemoteGATTService.webidl
@@ -5,7 +5,7 @@
 // https://webbluetoothcg.github.io/web-bluetooth/#bluetoothremotegattservice
 
 [Pref="dom.bluetooth.enabled"]
-interface BluetoothRemoteGATTService {
+interface BluetoothRemoteGATTService : EventTarget {
     readonly attribute BluetoothDevice device;
     readonly attribute DOMString uuid;
     readonly attribute boolean isPrimary;
@@ -15,3 +15,14 @@ interface BluetoothRemoteGATTService {
     Promise<BluetoothRemoteGATTService> getIncludedService(BluetoothServiceUUID service);
     Promise<sequence<BluetoothRemoteGATTService>> getIncludedServices(optional BluetoothServiceUUID service);
 };
+
+[NoInterfaceObject]
+interface ServiceEventHandlers {
+  attribute EventHandler onserviceadded;
+  attribute EventHandler onservicechanged;
+  attribute EventHandler onserviceremoved;
+};
+
+// BluetoothRemoteGATTService implements EventTarget;
+// BluetoothRemoteGATTService implements CharacteristicEventHandlers;
+BluetoothRemoteGATTService implements ServiceEventHandlers;
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 45dfabb2d13..756879c3fdd 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -7268,6 +7268,12 @@
             "url": "/_mozilla/mozilla/bluetooth/readValue/characteristic/disconnect-called-before.html"
           }
         ],
+        "mozilla/bluetooth/readValue/characteristic/event-is-fired.html": [
+          {
+            "path": "mozilla/bluetooth/readValue/characteristic/event-is-fired.html",
+            "url": "/_mozilla/mozilla/bluetooth/readValue/characteristic/event-is-fired.html"
+          }
+        ],
         "mozilla/bluetooth/readValue/characteristic/read-succeeds.html": [
           {
             "path": "mozilla/bluetooth/readValue/characteristic/read-succeeds.html",
diff --git a/tests/wpt/mozilla/tests/mozilla/bluetooth/readValue/characteristic/event-is-fired.html b/tests/wpt/mozilla/tests/mozilla/bluetooth/readValue/characteristic/event-is-fired.html
new file mode 100644
index 00000000000..291bcf805a6
--- /dev/null
+++ b/tests/wpt/mozilla/tests/mozilla/bluetooth/readValue/characteristic/event-is-fired.html
@@ -0,0 +1,35 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/_mozilla/mozilla/bluetooth/bluetooth-helpers.js"></script>
+<script>
+'use strict';
+promise_test(() => {
+    window.testRunner.setBluetoothMockDataSet(adapter_type.heart_rate);
+    return window.navigator.bluetooth.requestDevice({
+        filters: [{services: [heart_rate.name]}],
+        optionalServices: [generic_access.name]
+    })
+    .then(device => device.gatt.connect())
+    .then(gattServer => gattServer.getPrimaryService(generic_access.name))
+    .then(service => service.getCharacteristic(device_name.name))
+    .then(characteristic => {
+        let event = 'characteristicvaluechanged';
+        let event_promise = new Promise((resolve, reject) => {
+            let event_listener = (e) => {
+                characteristic.removeEventListener(event, event_listener);
+                resolve(e.target.value);
+            };
+            characteristic.addEventListener(event, event_listener);
+        });
+        return characteristic.readValue()
+        .then(result => {
+            return Promise.all([result, event_promise]);
+        });
+    }).then(results => {
+        let read_value = results[0];
+        let event_value = results[1];
+        assert_array_equals(event_value, read_value);
+    });
+}, 'Reading a characteristic should fire an event.');
+</script>