Vintage 1978 Simon Electronic Memory Game, MB Electronics (Milton Bradley), original packaging and instructions/insert included, sound and lights work with the exception of the green light, I believe the light bulb is burnt out, instructions on back of unit state an extra bulb is inside however I’m unsure if the bulb is still inside, replacement bulb is type 14 A, most likely an easy repair, I didn’t unscrew and open the unit. Requires two D and one 9 volt battery, batteries not included.