These Joy-Cons have been tested and confirmed to be working after maintenance. The sticks have been replaced with brand new 【4th generation】 ones. There are no button issues. Attaching and detaching from the main unit is also problem-free. They are in excellent condition, close to new, with little to no signs of use or scratches ✨ Updated to the latest version! Can also be used with Switch 2 via wireless connection. There may be some minor imperfections that I have overlooked, so please check the images for confirmation. Please refrain from purchasing if you are looking for a perfect product, as this is a used item. I will check again for any defects before shipping. When disassembled, I will perform a simple cleaning and wipe the surface with disinfectant wipes, and polish with a melamine sponge to remove invisible fingerprints, etc. When the product arrives, please reconfigure the controller update and stick calibration from your Switch console. In the unlikely event of any issues, please contact me before giving a rating. I will not be able to respond after the rating has been given, so please understand. Instant purchase is OK ⭕️ Feel free to comment if you have any questions. For price reductions, please use the price reduction request function.