<p>Einstein by Castle Toy Co., Made in Hong Kong, Copyright 1979. (Handheld Electronic Game)
</p><p>Einstein is a Computer With Electronic Lights and Sounds. You Have To Do What Einstein Tells You To.
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A good source of information on vintage handheld electronic games is the Electronic Handheld Game Museum (<a rel="nofollow" class="external text" href="http://handheldmuseum.com/">Handheldmuseum.com</a>).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/51764518@N02">Joe Haupt</a> from USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/51764518@N02/8683148257/">Vintage "Einstein" Handheld Electronic Game by Castle Toy Co., Made in Hong Kong, "Einstein is a Computer With Electronic Lights and Sounds. You Have To Do What Einstein Tells You To", Copyright 1979.</a>