1Large 4.5 Inch Screen: New Lcd instrument, large 4.5 inch Lcd screen, driving can clearly see the digital speedometer. A variety of cool interface/touch keys, the left side of the switch, a key to open, close, more convenient operation. 2Obd+Gps 2 in 1: Normal meters only have Obd mode, but our speedometer is dual mode. At the same time display obd+gps function, and the data display is richer, Obd display more data than Gps . 3Obd Mode Function: This function displays data including speed, water temperature, voltage, fuel consumption, speed clock, single driving time, and other more displayed data in the parameters. 4Gps Mode Function: This function displays data including vehicle speed, voltage, satellite time, altitude, number of satellites, driving direction, single mileage, and other display data in the parameters. 5Fitment: Gps mode is common to all cars; Obd mode applies to OBD2 gasoline vehicles produced in the United States after 2004, and OBD2 gasoline vehicles produced in other regions after 2008.