VoiceOver is an accessibility setting on the Apple Watch. When it's activated, your Apple Watch will inform you over audio what's happening on your Apple Watch.

Why Should I Turn Off VoiceOver On My Apple Watch?

VoiceOver is extremely helpful if you're in a situation that you can't look at your Apple Watch, or if you have a visual impairment and need verbal assistance keeping track of your personal technology.

For most people, VoiceOver isn't all that useful. If you don't think that you need it, we recommend turning it off.