Here is an unusual Pong from I believe 1977, it is unusual because the only power option is mains power, and it uses a Pong-on-a-chip known as the NTL-600, which offers three games in colour, and they are Squash, Tennis, and Soccer
The console is quite small but weighs a fair amount due to the internal mains power supply
Options include Speed with slow, medium, and fast options, Auto or Manual serve, and Autospeed on or off
Also the power switch is rotary with a volume control. The game start button seems to be broken on mine
The base of the console just has the model label and rubber feet
Typical wedge shape
The rear of the console just has the speaker with the hardwired mains and RF leads
The controllers feature a slider control for up and down, along with a rotary dial for left and right, and a serve button
The RF and UK mains plugs
6 - Number too big, 910:1