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MR CARTOOL M90 has a powerful ability to read vehicle information, compatible with GPS data reception and OBD data reading. It is more powerful and has more functions than ordinary GPS inclinometers.
Ordinary GPS inclinometers must be in a place with a good signal to receive satellite data, but the M90 comes with an OBD function to display vehicle speed in any place. If you need to drive through a long tunnel, you still can easily read vehicle speed and other car data via the OBD connection without satellite signals.
Note: The OBD function of M90 is compatible with most vehicles with an OBD interface, if you are not sure whether your car is compatible with the OBD function of M90, please let me know