Making use of modern and accurate GPS technology, this self-contained 88mm GPS Speedometer is available in 180 MPH and 290 km/h scales. The direct 10Hz GPS connection ensures accurate speed readings, and also that no calibration for use with the drivetrain is required, making the installation much easier tan with traditional speed sensors. Using a similar design to the rest of the gauges in the stack range, the display is also capable of showing a number of different parameters as featured below:GPS TimeCompass / HeadingPeak Speed Memory RecallDigital Numeric SpeedOdometer / TripLatitude / Longitude position dataHour meterPitch / RollThe speedometer includes a GPS antenna with 4.8m long lead for plug and play installation. the antenna is compact (38 x 34 x 14mm) so it can easily be hidden in required. Mounting hardware, wiring loom and detailed installation instructions are also included.