Tickets are no fun. Calibrating a speedometer isn’t a great deal of fun either. AutoMeter's GPS Speedometer Interface is the no fuss solution to complete your speedometer installation. Ideal for off-road applications with large wheel and tire combinations, racing gearboxes, and applications where packaging considerations prevent conventional speed sensor or cable installations. Ideal For Off-Road Applications With Large Wheel And Tire Combinations, Racing Gearboxes Fully Sealed And Paintable Magnetic Micro Antenna One Touch Calibration Process Takes Only Seconds For Most Other Electronic Speedometers GPS Module Is Fully Sealed Against Water And Dust Lightning Quick 10 Hertz Signal Update Rate Is The Fastest Available Plug And Play With Autometer Electronic Programmable Speedometers Limited 12 Month Warranty