ACECAR Digital GPS Speedometer New HUD Car Head Up Display LCD Display with MPH Digital Speed Compass Direction Driving Distance Altitude Overspeed Alert for All Vehicle

I travel a lot for work and this thing is great!! Easy to set up. I had to calibrate it a little,but very easy to do. So much nicer to check your speed than using the car speedometer.

I'm sure it works great... In China, which is where I'd like to send it back to. Yes, I read the tiny instruction manual. Yes, I understood it. Yes, I set it to my local time. I left it in the open. I left it powered on for days. I drove it with open skies. I did not deviate from the required voltage of 5 volts. (It is apparently "Forbidden" to run it any other way) No, it has no idea where it is, what direction it is going or how fast it is going. If I did it wrong, its because the directions are inadequate. Otherwise, it is simply defective. IDK if there are a thousand 5 star bot generated reviews. Its JUNK.

It works as said. The only thing I am disappointed about is that it didn't come with the non slip pad. I would prefer having it on my dashboard rather than my windows. I will have to get some double sided tape or something.

This product worked as described by Amazon and exceeded my expectations. The size was right on; not too small or big. It might take awhile before I can utilize all its capabilities, but for now, it is doing everything I wanted it to do.

I checked it's speed reading this morning with the map app on my phone. At highway speed it was 4 to 5 mph off. Need to go back to the directions see if I can calibrate that.

I always figured there had to be some sort of device available on Amazon that would allow you to monitor how fast you were driving. This product works decent. Probably the biggest issue that I had was that the instruction manual requires a magnifying glass to read. Other than that, once I figured out how to adjust the settings I was good to go. I do find that I have to recalibrate mph I wouldn't say frequently but every now and again.

Nice for old eyes! My speedo quit on my car so I threw this unit on the windshield until I can get the computer to talk to the dashboard again. Works great! May be showing a little fast compared to my good GPS, but that is fine.

The instructions on this speedometer is completely un-understandable. Nothing seems to work in trying to set up this unit which was purchased with the understanding that I could set it up. Why aren't these things written so that the average person can make sense of any of it! This is so frustrating. Cannot make any sense of any of it.