Authentic product. This is a used item. The sticks have been replaced with new ones. [Functionality] ・The sticks and all buttons have been serviced and their normal operation has been confirmed. ・Normal operation has been confirmed during wireless and console connection operation. [Warranty] ・If there is a malfunction, please contact us via the transaction message within 3 days of receiving the product and before providing feedback. We will address it as an initial defect. ※The serial number is recorded 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 with alcohol and take measures to prevent damage before shipping. ・To prevent trouble, we will not accept cancellations after the product has been shipped. (There have been cases where the product was not returned in the past.) ・We mainly sell individual items. If you would like a set of left and right controllers or multiple purchases, please contact us via comments. (We will offer a discount.) Please understand that this is a used item before purchasing. #nintendo #switch #nintendo #joycon #joy-con