Apple Watch Series 3

Apple Watch Series 3. I bought at a garage sale from a kid. He said it worked, but it was not charged. I bought it helping just to use it for a clock or a watch. I brought it home. He gave me the passcode. I cleaned it back the original settings I thought, and tried to pair it with my iPhone and it would not pair because I said it was already paired with another iPhone. I don’t know the address I bought it so I’m stuck with it. It’s not won’t pair. I have the watch and a very nice band that goes with it you’ll see in the pictures if you’re interested I live in Ellenton. Give me a call.