You need to check the refund policy for that seller, there may be a restocking fee applied and in most cases like this you would need to pay return shipping.
Im not saying youre abusing the return policy, but you should try to see it from the seller's point of view too.
Is the apple watch new or used ?
if it is new, it becomes very difficult to re-sell a new opened at near full price.
Try to work it out with the seller and it shouldnt be an issue, however in the future you really need to think about large purchases.
If you check other options such as the apple store, your seller should also know this same policy. Returns are accepted within 14 calendar days.
That means that as long as the product has been purchased directly from Apple (either at a retail store or online), customers have 14 days to return it from the date they received it. But to get a refund, the device must be repackaged with all the cords, adapters and documentation that were included when it was bought.
Good luck with the return.
