I am also listing this item on other sites, so I will remove the listing if it sells. The price may vary depending on the site due to commission fees. Limited edition of 3,500 units (with certificate and serial number) Note: Completely unused items come in a white box with a vinyl package. Items listed with a white box without a vinyl package, and photos of the Kinoko no Yama earphone case itself, have had the package opened. I purchased an unopened item with the vinyl package. I bought this because it has a simultaneous translation function and I wanted to use it overseas, but I ended up not taking it with me. It is a beautiful item, only used to check the function and operation after opening the vinyl package on the white box. Inside the case, on the upper right, there is a serial number that matches the serial number on the certificate. I am selling it because I have no opportunity to use it. I will ship it using the cardboard box it arrived in. Also, returns and other claims are not accepted to prevent swapping, etc. Please understand the above before considering a purchase.