Remove Apple Watch activation lock without previous owner Apple ID & Password
How to remove an Apple watch from the previous owner:
- Sign in to iCloud.com with the previous owner’s Apple ID.
- Go to Find My iPhone.
- Click All Devices at the top of the screen.
- Select the Apple Watch device that you want to remove from iCloud.
- Click Erase [Apple Watch device]. Select Next until the device is erased.
- Click Remove from Account.