1Working Principle: There are 5 sets of LEDs on each side of the steering wheel, as the engine Rpm increases with the range adjustable from 500RPM to 9900RPM, it will gradually light up green. Once reach your set Rpm, the indicator will flash red as an up shift reminder. 2Excellent Performance: The exquisite carbon fiber led steering wheel is designed with shift indicator lights 0?60 mph quarter mile and lap times lateral and longitudinal acceleration values and displays efficient dynamics data. 3Multifunction Display: The steering wheel can real time read the data from the display embedded in your steering wheel exactly as true racers do. Highlight display speed, Rmp, Lap, engine load, water temperature, voltage and other date. 4 Materials: 3K glossy carbon fiber is applied 1mm thick epoxy coating to bring extra oxidation protection, and built symmetrically and evenly without distorted weave. surface finish and high heat tolerance. 5Better Grip: The LED steering wheel is specially designed with flat bottom racing type, greatly increases leg room and provides excellent grip to help you better feel the racing excitement at any temperature and even in extreme driving situations. 6Easy to Install: Module connect with wireless OBD2 plug without any wiring or modification required, just replace the trim panel, wiring harness and shifting mechanisms from your existing steering wheel to the new one, fast and convenient.