i need help with apple watch

According to the "Related Article:"

If you already gave away your Apple Watch, you can erase and turn off Activation Lock from iCloud.com. Here's how:

1. On a computer, go to Find My iPhone on iCloud.com and sign in with your Apple ID. 
2. Select All Devices, then click your Apple Watch.
3. Click Erase Apple Watch. Select Next until the device is erased.
4. Click the X button  next to your Apple Watch. 

Learn more about Activation Lock. 

hwil74 Said:

"i need help with apple watch: i gave it away but forgot to delete data"

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For future reference: What to do Before you Sell, Give Away, or Trade in your Apple Watch, or Buy One from Someone Else - Apple Support. Read that link and have the recipient read it too.