This is an authentic product. It is a used item. The sticks have been replaced with new ones. [Functionality] - Sticks and all buttons have been serviced and confirmed to be functioning correctly. - Normal operation has been confirmed both wirelessly and when connected to the console. [Warranty] - If there is a functional defect, please inform us via transaction message within 3 days of receiving the product, before completing the review, and we will address it as an initial defect. * The serial number is recorded to prevent product substitution. [Other] - We have removed dirt as much as possible, but please check the photos for any scratches or blemishes. - The item will be disinfected with alcohol and shipped with scratch protection. - To prevent problems, we do not accept cancellations after the product has been shipped (as there have been cases where returned items were not received). - Single items are mainly listed. If you want a left/right set or multiple purchases, please contact us via comment (discount available). Please understand that this is a used item before purchasing. #nintendo #switch #nintendo #joy-con #joy-con