You must tell it to us within 30 days after you receive items. When we have sent a wrong item to you, we bear it. Once you open the package of items, we don't accept to return them. Our Products are 100% Authentic.If you have any question, please contact me. International Buyers - Please Note. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Synthesizers". The seller is "2011mar55" and is located in this country: JP. This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Canada, Australia.