Microsoft Edge is now a Chromium-based browser with a number of exclusive features like Read Aloud and services tied to Microsoft instead of Google.
Also, you must have a microphone connected. To try this feature, you should install Edge Canary from HERE. The context menu command lists the Win + H keyboard shortcut, which is the default hotkey for the native Dictation feature. It can be accessed from the address bar's context menu, or in a comment field on any website.
The Edge option appears in the context menu for any input field in the browser. How to use Voice typing in Microsoft Edge Earlier, Microsoft did the same for Office products. To offer Edge users a similar option, Microsoft has added a shortcut to Edge that simply launches the native Dictation feature of Windows 10.
The key difference here is that the voice input option in Chrome is tied to Google's exclusive API which are not licensed for use in third-party apps, and also only work with Google's websites. The new feature comes as a replacement for the similar option in Google Chrome.