I remember seeing these in catalogues back in the day, it is an unlicenced Atari 2600 clone with built in games, I got this from the Taunton Retro Toy Fair from the Avatar Games stand
Styled in the form of a handheld, which you can use it as one if you want, but you can plug Atari standard joysticks in and use it as a console instead
Four AA batteries are required, or you can use a 6V DC adaptor
The logo looks a bit cartoonish
External power socket, power switch, and RF output, yes that's RF!
Two external joystick ports, so two can play together
D pad and ridiculously large fire button
The unit boots straight to this screen, and expects you to know the number of the game you want, which I don't, so I just entered random numbers to see what came up
Here's what came up with what numbers I put in, the games do play ok though. The Wiki page has all the details of games and their numbers
Yes, the external joystick ports work as expected
?ILLEGAL QUANTITY ERROR