Italian version:
Coleco Zap! (1979, LED, 9 Volt, Model# 76946)
U. S. Patent # 4,322,073
Invented by: William Slavik and John Moravec (according to the patent)
View Manual
This is an interesting two-player game. It's similar to Pong, you bounce a blip back and forth, but rather than trying to figure out where it's gonig to hit, you just have to send back before it reaches you. The longer you wait to send it back, the faster it goes (back to the other person), so the object is to wait as long as possible...
Italian version:
Do I have this? Yes, with box and instructions. Pic is mine.