Car Heads Up DisplayAdd Car Heads Up Display and Driving More Safety Looking down at the speed of the dashboard is a habit of most drivers. Some data shows that it takes about 1 3 seconds to look down at the dashboard, and our perception of the road is non existent during this short time, and accidents often occur at this time. Highlights Driving Speed Driving Direction Satellite Digital Current Time Error Alarm Instant Voltage Water Temperature Altitude Specifications