Step 1. You have to press the side button of the apple watch and hold it until you see “Power off” on the screen.
Step 2. Now press the Digital Crown and. Hold it until you see the option of “Erase all content and settings” on the screen. Remember don’t stop holding digital crown until you see the option.
Step 3. After the option of “Erase all content and setting” appears all you have to do is simply tap on the “Reset” option, then tap the “Reset” option again to confirm your choice which is appeared on the screen.
Step 4. Now you have to wait for the process to finish and after that set up your apple watch again.
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