That touch pad controls the NexSysLink gauge system in the tachometer. There are ten (10) window with main hour meter and nine (9) more you can program for functions provided through the NMEA or SmartCraft protocols. They come with five windows and you reprogram it to nine. There are three LED screen lines in the tachometer and you can see RPM, Fuel Flow and GPS speed all at one time, or whatever you prefer.