VJOYCAR C80 4.5" Large Screen Hud Head Up Display GPS Digital Speedometer for Cars with MPH Odometer Speedo Fatigue Alert, Universal for All Auto Automotive Tool - VJOYCARLTD

• UPC   610521672251
• 【What's GPS Speedometers?】Collecting speed from GPS satellites. No relation with the car engine, therefore, it’s 100% universal for all vehicles include car, truck, pick-up, suv, scooter, train, motorcycle, bike, boat, RZR… 【What does the GPS HUD display?】Driving Speed, Single Driving Time, Single Driving Mileage and Total Mileage - Odometer. Single Driving Mileage from ACC is on to ACC is off. Model C80 and C90 has total mileage - odometer function also. 【What's the speed unit?】KM/H and MPH. Long press the "Enter" button, when the left side of the screen lights up "ML" or “KM” means the speed is displayed in MPH or KM/H. 【What other function?】Over-speed alert/alarm. Default setting alert value is 120. Adjust the over-speed setting, once over value, it will give a warning. If want to off speed warning, just adjust the over-speed value to a very impossible high value. 【How accuracy?】 As usual, it’s 2-5MPH/KMH off from the car engine speed. The display speed could be calibrated by hand easily. Make it 2-5 miles ahead to avoid speed ticket. Professional factory on little car safety speedometer for more than 10 years, offer u good small beautiful things with good price.