Pioneer DJ CDJ-50 Lens Maintenance, Original Box Included The lens was cleaned with isopropyl alcohol and then wiped dry. The inside of the housing, exterior, and rotating platter were polished and finished with a coating wax. There is no stickiness. Reads well, buttons and faders move smoothly. All functions are working well on this CDJ-50. Original box and instruction manual included. The original box has traces of a courier service slip. #CDJ #CD player #nakamichi