watch crashed while updating to watch iOS 3

Hi

Try force restarting your watch: press and hold down both buttons for at least 10 seconds, until you see the Apple logo.

If your Apple Watch displays a red exclamation point - Apple Support

If the issue persists, contact Apple Support or make a Genius Bar reservation for assistance:

• Contact - Official Apple Support
• https://twitter.com/applesupport
• http://www.apple.com/retail/geniusbar/

Make sure your iPhone is up to date prior to updating your watch > Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support