Cars GPS HUD Heads UP Display Digital Speedometer with LED Screen Speed Projector for Cars & Other V

[What's new of the car HUD?]Two display mode. Head Up Display: project the driving speed on the windshield.; Normal Stand-alone Display: show the driving speed on its LED display directly.[Plug & Play] The HUD projects the real and instance speed with GPS satellite. Power through vehicle lighter (NOT INCLUDED). No professional installation is required. No wiring needed to the VSS (vehicle speed signal) Compatible with all cars & trucks & bicycle, motorcycle (for bicycle and motorcycle need connect with power bank, to power for HUD)[Over Speed Alarm]Over-speed Alarm and fatigue driving alarm to your safe trip.Default setting is 120KM\/H or 120MPH. Just need press the \up\ or \down\ to adjust it. When over-speed alarm is active, it will beep in 3 times to alert the car driver. If no need overspeed alert, adjust it to a impossible speed\/ preset fatigue driving time eg:999MPH.[What's GPS Speedometer?]Collecting driving speed from GPS satellites. No relation with the car engine, therefore, it's universal for all vehicles include car, truck, pick-up, suv, scooter, train, motorcycle, bike, boat..[How accuracy?]As usual, it's 2-5MPH\/ off from the car engine speed. The display speed could be calibrated by hand easily. 2-5 miles ahead to avoid speed ticket.Colour: blackMaterial: plasticPackage Contents:1 * HUD Heads UP SpeedometerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.