As long as everything is in new condition and warranty not filled out it should not be a problem just send it back to:
33 west 17th street New York NY 10011
With a copy of the invoice stating that you want a refund.
全て新品の状態で、保証書にも書き込みがなければ問題ありませんので、下記住所に返送下さい。
33 west 17th street New York NY 10011
返金を請求する旨のインボイスを同封するようお願いします。