<p>Takes 4 "AA" batteries.  The hinged lid on the top of the game is often missing.<br></p>
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@N02/8689154592/">Vintage Epoch "Digit-Com 9" Electronic Baseball Handheld LED Game, Made in Japan, Copyright 1979</a>