Autometer used their years of competition gauge manufacturing to evaluate not only what was lacking in current GPS Speedometer technology but to also evaluate the signal and receiver so that they could reduce the cost making this technology more affordable to all boaters. Best of all the new gauge is loaded with exclusive features such as a digital display featuring an eight function menu.This menu provides Heading or Compass course, Peak Speed, Time of day,Trip meter, giving distance covered as well as a total distance odometer, location in Latitude and Longitude coordinates, Hour meter,and comes with variable brightness with (6) six levels of brightness adjustment.Kit includes GPS Receiver.