Do I need to re connect watch to reset it back to factory settings selling
It's recommended to reset the watch to factory defaults so there is no personal data on the watch. And for the buyer, it's like they received a new watch out of the box.
Venu 3 series Owner's Manual - Resetting All Default Settings
Then remove the watch from Garmin Connect and remove it from your Bluetooth settings on the phone.
May I ask why you are selling it?
