Thank you for viewing. This item has been internally serviced, its operation confirmed, and has undergone basic cleaning. New analog sticks have been replaced. Button operation: ALL OK Charging: OK Remote operation from the main unit: OK Furthermore, I have checked the R and L buttons, which are directly attached to the internal electronic circuit board (making them the most difficult to repair if they fail), by touching the board to confirm that there is no immediate risk of them becoming loose or detaching from the board. I have taken the time to maintain this item so that it can be used 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.