Model No.: 2B-610
Power: 1 9-volt battery
Notes: If you remember Fonas at all, it is probably their tethered tennis "Zimm Zamm" game that comes to mind. Although Fonas was a tethered sports pioneer, the company also marketed handheld electronic games like this game.
According to the box, this game has "More play power than any other computer toy." Nice job Fonas - that tagline is so awesomely vague.