Geyiren G12 GPS HUD Digital Speedometer Plug and Play for All Cars Big Font KMH MPH Mileage Local Time Altitude Head-up Display Product DescriptionGPS speedometer display - The latest version has a 5.8" screen that displays both the most important MPH data and the mileage/direction/speed. The satellite speed is accurately displayed and the compass gives you directions for all your data needs while driving.Driving Safety Reminder - What is the most important in driving? As we all know, life safety comes first, speeding and fatigue driving are not allowed, our car speeding alarm HUD has two important reminders, speeding reminder and fatigue driving reminder, when the speed exceeds your set value, it will send out a ticking sound to remind you so as to reduce the speed; driving time over 4 hours will remind you need a short break, it is a caring safety housekeeper during the journey.HD Data Display - Equipped with automatic light-sensitive screen, no need to adjust manually, it will automatically adjust the most suitable display brightness according to the external light, so you can get the clearest data no matter in the daytime or at night, no longer need to worry about the problem of not being able to see the display when the sunlight is strong.Technical Processing Chip- This digital GPS speed meter built-in chip has super performance and compatibility, dual running memory and dual-core processor ensure the smoothness of high-speed operation, providing data help for your car travel life, effectively reducing the problem of data delay and following up the driving speed in real time.Warm Tips - As most HUDs GPS speedometers on the market show, they can only show the current driving distance. Because it relies on the car's power supply to work, it cannot retain the previous distance data when the car is turned off, nor can it accumulate the total distance traveled in the event of a power failure.Speed Units KM/H and MPH can be Switched Freely. Function: speed, clock, date, driving direction, single mileage, single travel time, satellite number, altitude, Longitude and latitude, 100 kilometers acceleration test.Speeding alarm: Alerts drivers not to exceed the speed limit to improve driving safety.Fatigue driving reminder: The 4-hour continuous driving break reminder can prevent car accidents caused by driver fatigue. Package include:1x HUD1x Rotary Holder1x USB Cable1x Non-Slip Mat1x User Manual Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.