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 working properly. ・Confirmed to be working properly both wirelessly and when connected to the console. [Warranty] ・If there is a malfunction, we will address it as an initial defect if you contact us via transaction message within 3 days of the product's arrival and before you rate the product. ※The serial number is recorded to prevent product substitution. [Other] ・We have removed dirt as much as possible, but please check the photos for scratches and stains. ・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. (We have had cases where the product was not returned in the past.) ・We mainly sell single items. If you want a set of left and right or want to purchase multiple items, please contact us in the comments. (We will offer a discount.) Please understand that this is a used item before purchasing. #nintendo #switch #任天堂 #ニンテンドー #ジョイコン #joy-con