"Dear Souichi Shiota, I propose to pay 20 USD you as the repair cost which will have to pay for it in your country instead of receiving the watch back. please kindly confirm. Best Regrards."
If you're satisfied with this solution, you can let the seller know by sending a message in the Resolution Center. If you don't want to accept this offer, we encourage you to send the seller a message with solution that you'd be happy with.