Feature: 1. OBD+GPS dual system 2. Two installation methods, A-pillar trim + dashboard installation. The first model that can be installed on the A-pillar trim. 3. Currently the first model whose screen can rotate 270 degrees. 4. The first model whose resolution is 240*240, high-definition display. 5. There are three units of turbine pressure: PSI, 100kPa, and bar. The turbine value can be adjusted and calibrated; also with fuel consumption unit: KM-L. 6. Up to 10 Hz refresh rate, no stutter delay. 7. GPS function can be displayed at the same time in OBD mode, the first model in the industry. 8. When the speed is switched to MPH, the water temperature will automatically switch to Fahrenheit , the single driving distance will automatically switch to Miles, and the fuel consumption will automatically switch to Gallon MPG. 9. 8 display screens can be selected. Specification: Product size: 97*61*49mm-3.82*2.40*1.93" Net weight: 40g Package size: 110*110*70mm-4.33*4.33*2.76" Gross weight: 190g Installation position: 1. Tied on A-pillar trim; 2. Lay flat on the dashboard