You can use your iPhone to help you find Apple Watch if it’s nearby. (Requires iPhone with iOS 17 or later.)
On your iPhone, open Control Center with one of the following methods:
On an iPhone with Face ID: Swipe down from the top-right corner of the screen.
On an iPhone with a Home button: Swipe up from the bottom edge of the screen.
Tap Protect a lost Apple WatchApple Support article: If your Apple Watch is lost or stolen