Description
Collecting speed from GPS satellites, available for all cars, easy to install, plug and play.Screen 3.5 inch HD display.Automatic and manual brightness adjustment mode,driving without glare.Auto power on/off: HUD start and off with vehicle started and shutdown, effective protection of the car battery;retaining the manual switch mode,more easy to control HUD..Rich Contents: speed,compass, speed alarm,free switch between km and miles