If you aren't familiar here is a link to the product site:
http://www.artlebedev.com/everything/optimus-mini/
They are sold out and the company has been focusing on their crazy-expensive full OLED keyboard. This is the black version, it has three OLED screen buttons. The protective plastic is still on all three keys.
you can control the picture that is displayed (BET, CHK, Raise is what I displayed) then map them to your own Hot-Keys or Table-Ninja functions. I used it to sit on the couch and multi-table stacked/cascaded tables without needing a mouse or keyboard.
You can also switch between profiles so one of the keys displays your gmail box and notifies you of new mail, one click and it launches your inbox, similar thing with itunes shows now playing, etc.
There are drivers for MAC and Windows (although I have heard you have to download an additional driver for 64-bit machines).
They currently sell for ~150-75 not shipped because they are hard to find, I'm asking $140shipped anywhere in conUS (payment through FTP), only reason I'm selling is I'm getting a programmable gaming keyboard with similar Keys built in.
Will post pictures tonight.