1978 Milton Bradley "Simon" Electronic Tabletop Memory Full-size Simon Version#4850 (Copyright 1978 By Milton Bradley Co. Under Berne & Universal Copyright Conventions. Made in U.s.a)(made in U.s.a.)(patent No. 4207087)(takes Two "D" Size Batteries & One 9 Volt Transistor Battery---alkaline Batteries Recommended)(full Size Simon Version, Black Body Version with Green, Red, Teal Blue and Yellow Big Buttons)(has Game1,2,3 Switch---skill Level 1,2,3,4---last Button, Start Button, Longest Button, Off/on Switch) Made in 1978 Called Simon Battery Operated Original Simon Hard to find