Very interesting and early pong system but sadly nearly nothing is known about it.
It might be an analogic pong, using no dedicated chipset. The back of the manual says "Semi-conductors: 8 ICs, 26 transistors".
The controllers are weird : two knobs for each player, integrated into the plastic case. One for vertical movements and the other for horizontal movements. Two other knobs at the top of the case are used to set V-Hold and H-Hold values of the display. Another control (dial or push button) seems to be used to choose between channel 26 or 31 on the TV.
It does not have sound and there is a swith on the right hand to switch between 2 player or 1 player with computer. In this case, the computer is almost impossible to beat!
The score is not displayed on TV, but there is a way to keep track of each player's score thanks to two numbered wheels built-in the case.