Play/Pause button (TACT Switch) type or part number?

Hi Everyone, I need to replace my mc4000 play/pause button. I spent a lot’s of time to find what type of tact switch in there but I did not find anything. Has anyone know what type of (play/pause) TACT Switch in the mc4000? Or has anyone know the part number of mc4000 (play/pause) button TACT switch? Thank you and have a good day.