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id: a6c19358-b49a-47be-9389-8fae1b9476a2
title: createMicrophoneDeviceWatcher
slug: /js/reference/webrtc/create-microphone-device-watcher
description: createMicrophoneDeviceWatcher function in the WebRTC namespace.
max-toc-depth: 3
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### createMicrophoneDeviceWatcher

* `Const` **createMicrophoneDeviceWatcher**(): `Promise<EventEmitter<DeviceWatcherEvents, any>>`

Asynchronously returns an event emitter that notifies changes in all microphone devices. This is equivalent to calling `createDeviceWatcher({ targets: ['microphone'] })`, so refer to [createDeviceWatcher](/docs/browser-sdk/v3/js/reference/webrtc/create-device-watcher) for additional information about the returned event emitter.

#### Returns

`Promise<EventEmitter<DeviceWatcherEvents, any>>`