I don't know much about this clone. I already had one in kiddays but someday it stopped working. At this time i had no idea about electronic and so i throwed it into the garbage. My first one looked the same, but had only 192 games build in so it seems, there are more versions of this clone out there. It has real 2600 games on it like Defender, Pitfall and River Raid (a few of the games i could identify)
I'm not that good in soldering, till now i've only modded consoles by detailed tutorials.
... few more pics.