Sanwa OBSAX-C45UM-W-1FLED-W-12V

An illuminated 45mm round pushbutton, manufactured by Sanwa Denshi.

This pushbutton has a built in 12V LED lamp that glows brightly when the plunger is depressed and features excellent heat resistance due to the polycarbonate manufacturing material. 

This button is a specialised product often used in music games and prize machines.

(Note: The mechanical life of the microswitch is 1 million + repetitions and the electrical life of the LED lamp is 500 thousand flashes)