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 confirmed to be functioning normally. - Normal operation has been confirmed both wirelessly and when connected to the main unit. [Warranty] - If there is a functional defect, we will address it as an initial defect if you contact us through the transaction message within 3 days of product arrival and before the rating is submitted. * We are keeping a record of the serial number to prevent product substitution. [Other] - We have removed dirt as much as possible, but please check the photos for scratches and other marks. - We will disinfect with alcohol and take measures to protect against scratches before shipping. - To prevent trouble, we do not accept cancellations after the product has been shipped (as we have had cases where the product was not returned in the past). - We primarily sell single items. Please contact us in the comments if you would like a set of left and right controllers or if you would like to purchase multiple items (we will offer a discount). Please understand that this is a used item before purchasing. #nintendo #switch #任天堂 (Nintendo) #ニンテンドー (Nintendo) #ジョイコン (Joy-Con) #joy-con