diff --git a/.vscode/settings.json b/.vscode/settings.json
index 00508d6..6744008 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -3,8 +3,8 @@
   "editor.formatOnSave": true,
   "editor.defaultFormatter": "esbenp.prettier-vscode",
   "editor.codeActionsOnSave": {
-    "source.fixAll": true,
-    "source.addMissingImports": true
+    "source.fixAll": "explicit",
+    "source.addMissingImports": "explicit"
   },
   "prettier.enable": true,
   "cSpell.enabled": true,
diff --git a/package.json b/package.json
index f0bed45..91bc540 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@agoraio-extensions/agora-rtc-sdk-ng-fake",
-  "version": "1.0.12",
+  "version": "1.0.13",
   "private": true,
   "description": "Fake Agora Web RTC for testing",
   "repository": {
diff --git a/src/index.ts b/src/index.ts
index d5e4729..fc7ddd5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -15,6 +15,8 @@ export * from "./client";
 export * from "./version";
 
 export const FAKE_VIDEOINPUT_DEVICE_ID = "1";
+export const FAKE_PLAYBACKINPUT_DEVICE_ID = "2";
+export const FAKE_RECORDINGINPUT_DEVICE_ID = "3";
 
 const FakeAgoraRTC = createFakeAgoraRTC({
   setAppType(): void {
@@ -33,32 +35,48 @@ const FakeAgoraRTC = createFakeAgoraRTC({
     //
   },
   getCameras(): Promise<MediaDeviceInfo[]> {
-    //todo
     return Promise.resolve([
       {
         kind: "videoinput",
-        deviceId: "1",
-        label: "1",
+        deviceId: FAKE_VIDEOINPUT_DEVICE_ID,
+        label: FAKE_VIDEOINPUT_DEVICE_ID,
+      },
+    ] as MediaDeviceInfo[]);
+  },
+  getMicrophones(): Promise<MediaDeviceInfo[]> {
+    return Promise.resolve([
+      {
+        kind: "audioinput",
+        deviceId: FAKE_RECORDINGINPUT_DEVICE_ID,
+        label: FAKE_RECORDINGINPUT_DEVICE_ID,
+      },
+    ] as MediaDeviceInfo[]);
+  },
+  getPlaybackDevices(): Promise<MediaDeviceInfo[]> {
+    return Promise.resolve([
+      {
+        kind: "audiooutput",
+        deviceId: FAKE_PLAYBACKINPUT_DEVICE_ID,
+        label: FAKE_PLAYBACKINPUT_DEVICE_ID,
       },
     ] as MediaDeviceInfo[]);
   },
   getDevices(): Promise<MediaDeviceInfo[]> {
-    //todo
     return Promise.resolve([
       {
         kind: "videoinput",
         deviceId: FAKE_VIDEOINPUT_DEVICE_ID,
-        label: "1",
+        label: FAKE_VIDEOINPUT_DEVICE_ID,
       },
       {
         kind: "audiooutput",
-        deviceId: "2",
-        label: "2",
+        deviceId: FAKE_PLAYBACKINPUT_DEVICE_ID,
+        label: FAKE_PLAYBACKINPUT_DEVICE_ID,
       },
       {
         kind: "audioinput",
-        deviceId: "3",
-        label: "3",
+        deviceId: FAKE_RECORDINGINPUT_DEVICE_ID,
+        label: FAKE_RECORDINGINPUT_DEVICE_ID,
       },
     ] as MediaDeviceInfo[]);
   },