I've heard the name Prinztronic before, but know nothing about them, this is my first Prinztronic Pong console
It turns out Prinztronic was an in-house brand from Dixons, which was used for imported Japanese manufactured electronic goods
I will be testing it soon, most likely with the Ferguson 3840 portable black and white TV
Testing achieved

Here is the top and bottom of the unit

Close-up of the model label

Battery compartment

The sides, there is a controller socket on each side, and an external PSU socket as well, the last socket may be for the rifle attachment?

This works perfectly
Tennis, I managed to get the ball bouncing between two bats indefinitely, which was the style at the time
Update
I found another one of these at Retro Bristol, I was unsure whether to get it or not as I already have one, but this one was in its box, and I got it for £5 along with the Decca Sport TV game which was £10

The box is not in the best of condition

The console is a bit dusty

Six batteries or a mains adaptor are required

Around the unit with its controller ports and external power socket. There two sockets for a rifle as well

Permenantly attached RF lead

The controllers, just a rotary dial on the end of a tube
2 - Variable not found, 100:1