Forgot iWatch Passcode

Hi

Follow these steps to erase your locked Apple Watch (not iWatch) and re-pair it with your iPhone:

• Connect the Apple Watch to its charging cable, connected to power.
• Whilst keeping the Apple Watch on the charger and connected to power:
  • Press and hold the side button until you see the Power Off slider.
  • Press firmly on Power Off (do not try to slide it - just press down more firmly than a normal tap), release your finger and then tap on Erase all content and settings and confirm when prompted.
• Re-pair your Apple Watch using the Watch app on your iPhone, choosing to Restore from Backup if offered the option:
  • Be sure to update your iPhone to the latest version of iOS before re-pairing:
  • Update your iPhone, iPad, or iPod touch - Apple Support
  • Set up your Apple Watch - Apple Support

More information:

If you forgot the passcode for your Apple Watch - Apple Support