This is one of the rare Pre-Famicom consoles released by Nintendo in the late 1970s. The Nintendo 6 was the first games console Nintendo ever made, released in 1977. It is a simple pong game, but historically very important. The Nintendo 6 doesn't feature seperate controllers, the dials on the front of the unit control the bats on screen.
This example is boxed complete with manual, 8/10, and Nintendo TV switch. The console is in very good condition, and the battery compartment is immaculate (see additional pictures). The outer box is in pretty good shape too considering its age, overall 7/10.
Japanese consoles from this era are very difficult to use on UK/European TVs, as they only have RF outputs and the signal is not compatible with UK Televisions.