Authentic product. This is a pre-owned item. The sticks have been replaced with new ones. [Functionality] ・We have serviced the sticks and all buttons, and confirmed that they function properly. ・We have confirmed normal operation during wireless and wired (console connection) use. [Warranty] ・If there is a malfunction, please contact us via transaction message within 3 days of receiving the item and before providing a rating, and we will handle it as an initial defect. ※We have recorded the serial number to prevent product substitution. [Other] ・We have removed as much dirt as possible, but please check the photos for any scratches or stains. ・We will disinfect the item with alcohol and take measures to prevent damage before shipping. ・To prevent trouble, we do not accept cancellations after the item has been shipped. (We have had instances in the past where the item was not returned.) ・Our main listings are for single items. If you are interested in a set of left and right controllers or purchasing multiple items, please contact us via comment. (We will offer a discount.) Please understand that this is a pre-owned item before purchasing. #nintendo #switch #nintendo #joy-con #joy-con