Suggested Retail:$55. VJOYCAR T812 HD 4.3" Car Universal HUD Head Up Display, OBD2 GPS Dual System, Vehicle Speed MPH KM/H, Engine RPM, Overspeed Warning, Mileage Odometer, Coolant, Voltage. OBD SYSTEM: For cars with OBD2 interface (Only work with OBD line), In addition, the OBD2 cars should be manufactured in America after 2004 and manufactured in Asia/Europe after 2008. But the OBD2 can't work on Jeep, Pick Up, ORV, Dodge, Ford GM Chrysler. MULTI FUNCTIONS: ECT - Engine Coolant Temperature, VLT - Voltage, FUE - Fuel Consumption, RPM - Revolutions Per minute, ODO - Odometer, TIM - Single Driving Time, DIS - Single Driving Distance, MAP- Manifold Air Pressure, OIT - Oil Temperature, A/F - Air F. Alarm: over speed alarm, coolant alarm, RPM alarm, bat alarm, low voltage alarm, high water temperature alarm, engine fault code alarm. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.