2 layer board of 3.94x2.99 inches (100.08x75.95 mm).
The board has the following capabilities:
512K PRG rom 32K CHR Ram self-flashing (no need for a battery) On the fly mirroring mode change Horizontal Vertical One-Screen The original version of the board, as seen in Battle Kid 2, and other upcoming games, does not have full on the fly mirroring change, just partial, if the One-screen mirroring jumper is soldered. This one does away with the mirroring jumpers altogether.
Also, the board can be mounted with either Ciclone, a closed source cic chip, or with AVRCICzz, an open source cic chip.