1. This is GPS hud, collecting speed from GPS satellites, could apply to all kinds of vehicles on the world. Plug and Play
.2. Two display mode: normal stand-alone and project to the wind glass.
3. Two speed units for choice: KM/H and MPH.
4. Bright digital display, could see the speed very clear even at night or under rain, .
5. The brightness can be adjust by hand.
6. The speed can be adjust by hand: If compare to your own gps unit, the speed is higher or lower, you could adjust it by hand.
7. High quality car adaptor is include, plug and use.
8. Car adaptor cable:250cm