Bentley Compu-Vision is an arcade port for the Dedicated Consoles, which can be played by 1-2 people. It was published by Magnavox.
In good condition, the game is worth about $25.00. Bentley Compu-Vision was released in 1983.
This is a problem with most "Pong" systems: turning the knob too far will make them go off the screen. The knob can be turned all the way around, yet it only uses 1/4 of the motion range for the on-screen paddle.