Apple Watch
Q: Apple watch previous owner unknown
Need to register, but previous owner is unknown and can't contact them to unlock.
Apple Watch
Posted on Apr 23, 2016 8:30 PM
by gail from maine,Apple recommended
iCloud
Then you would need to return it for a refund. The Activation Lock can only be removed by unpairing the Apple Watch from the iPhone it is paired with and which has Find My iPhone turned on:
About Activation Lock on Apple Watch - Apple Support
Sorry
Posted on Apr 25, 2016 8:10 AM