<p>Vintage "Digits" Electronic LED Handheld Game by Coleco, Made in Hong Kong, "The Computer Programs a Four-Digit Number and It's Up to You to Figure Out the Right Digits in the Right Order", Copyright 1978<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@N02/8679350428/">Vintage "Digits" Electronic LED Handheld Game by Coleco, Made in Hong Kong, "The Computer Programs a Four-Digit Number and It's Up to You to Figure Out the Right Digits in the Right Order", Copyright 1978</a>