2 KINDS INSTALL---Install on A-Pillar trim or put on dashboard, more easy for use. Simply displays directly to you at whatever angle you set it up is possible, no need to make effort or look down that would create distractions, best assistant to help ensure your driving safety. | MORE EASY---Easy to install, set up is no more complex than connecting to USB power. It takes perhaps half a mile to lock onto a satellite and do its housekeeping before speed is displayed. | 8 DISPLAY INTERFACES---Different interface can be freely switched. Read full car data stream, display vehicle ECU data. | MULTI-FUNCTION---OBD+GPS dual system with function display, such as speed, clock, RPM, voltage, water temperature, etc. please note: the default mode is OBD2 mode. | QUALITY & SERVICE---CE FCC RoHS listed. Any querry, feel free to contact us, we will reply and help you solve problem ASAP.