Back from 1979, its an LED game.

This:

http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WDVW

It needs to be functional and have the battery cover. I don't need the box or instructions, though they would be nice. Condition isn't terribly important as long as there are no heavy scratches or cracks. I want the unit to play excessively, not just to collect (childhood memories)