An App that is installed for the keyboard when you install the game.
There is also a media player app that will show what song is playing...etc
This was a picture I took of my keyboard LED screen showing some rape I laid in BC2:
As you can see in the picture, on the bottom right it says 1/3. With a press of a button, I can cycle through to other information (Server Info, Attachment Upgrades...etc)
Of course with the G19, it will be "prettier", but I couldn't afford an extra $100 for "Pretty" lol