GPS Digital Speedometer Car Head Up Display HUD Odometer Overspeed Alarm Universal with Speed MPH, Compass Direction, Clock, Altitude, Fatigue Driving Reminder

had to learn that unit does not like being left on all the time.my truck lighter is allway on unit would shut down

Well apparently there are ways to adjust the accuracy of of the speed of this unit however I don't see why that is really necessary with something that is GPS. In my opinion GPS should not need calibrated.. the display is only accurate up to about 5 mph and when you are doing 55 mph it's over 5 mph fast. When you're doing about 49 it will say that you are doing 55. The elevation was another strong attraction point for me and it seems to consistently be off anywhere from 20 ft to 200 ft which was honestly to be expected but I was hoping for better. The compass is finicky as well so just would not rely on it for accurate readings if you are actually going to use it for navigation. Other than that this thing is extremely nice looking and the automatic brightness control works extremely well. Very nice and easy on the eyes and very easy to read with a lot of different options for what you want to display and what you don't. Extremely easy to install with the included suction cup! I'm sure I will like this thing a lot when I have the time to read the manual and calibrate it properly I just have not had that time yet. I can definitely recommend this heads up display, Just be warned that you will probably have to spend some time and calibrate it..

This product works great.

Followed instruction...killed my car battery overnight. READ THE BUYERS COMMENTS BEFORE BUYING WITH ANY WARNINGS!!!

Use it in my classic car with a power block, works great

It’s ok

I have used this in my car for quite awhile now, It is easy to see in the daytime and the night. I use the clock, Speed and altimeter. Fairly accurate.

I really like the display. I like how easy it mounts to where I want it to be. I just wish the instructions that came with it was not printed so micro small, on a paper that's a little larger than a book of matches... But there is only one switch that moves through different functions/displays. I like the digital display for the speed and it appears to be accurate. It's attractive at night and I dont have to look down at car's speed odometer any more because I have the Head Up Display low on my windshield down close to dash. View not blocked what so ever. During the day, depending on what angle the sun, the sunlight made it hard to see the mph read out...there seems to be a slight delay on the mph, and I do mean "slight".