Yeah! they are full c64's implemented in an Asic chip. Even it had a flash rom of 2mb(only in pal version i think). also you can attach a keyboard and a 1541 drive for a full c64 experience. Even some users managed to get a second joystick to the unit!.
The unit was designed by Jeri ellsworth, the maker of the C-one and was a device really made thinking about the c64nuts out there because it can be hacked extremely and the pin outs for the hacks are arleady in the pcb only for you to solder it!.
I bought one whet it was available in my country and is one of the best things i bought recently!!!