Thank you for viewing. This item has been internally serviced, its operation confirmed on both the left and right sides, and has been lightly cleaned. Analog sticks have been replaced with new ones. Button operation: ALL OK Charging: OK Remote operation after detaching from the main unit: OK Furthermore, regarding the R and L buttons (which are directly attached to the internal electronic board and are the most difficult to repair when they fail), I have checked on the board and confirmed that there is no immediate concern of them wobbling or detaching. I have taken the time to service this item so that you can use it for as long as possible, but please understand that it is a used item before purchasing. Please check the photos as there may be minor scratches that are difficult to notice. For the purpose of preventing product substitution, the serial number will be recorded before shipping.