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

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.

Truly garbage. The screen is great, it was easy to set up, the mount is great...... But it doesn't work well if at all. It takes at least 20 minutes to find a satalight and then it works sporadically about 5 mph fast. It then gets stuck at a random speed. Wildly unhelpful.

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.

First off, reviews complaining about accuracy... you guys are lame. It will allow you to calibrate if you notice a discrepancy between you phone's GPS & the unit's. You will notice it is slower to respond than a real, non-GPS gauge. Keep in mind GPS technology is accurate to about 3 feet so that's why it'll slowly tick down when you come to a stop, for example. Or if you're clocking 0-60, this isn't the unit for you. Go buy a real automotive wired gauge. If you want to know your cruising speed so as not to get a speeding tticket, this should do! One thing that may also effect accuracy is the proximity to windshield. You'll want a clear view to the sky/satellites! This is a great unit if your gauge went out and you don't feel like dumping hundreds of dollars into repairing the factory equipment (like me!) Next, it's USB powered, NOT rechargeable. Again, not a big deal. Just take a little time to route your cable nicely. The unit must have some type of memory as it remembers your settings when powered off/on. Settings seemed a little confusing, at first, but once you figure out it's super easy. All Settings with one nice button: HOLD button in to open each mode (1-8, think it was) then toggle button left or right to change setting. Pretty cool. Great selection of LED colors, too! I matched to the gauge cluster but many more.

Plug it in and it works. Easy to use, seems pretty accurate.

This GPS speed display, has 6? colors to choose from. Color change is the default setting on the single toggle control. I was able to choose a color for the speed display ad the compass, choose mph and set the clock. The instruction book print is so fine I needed to use my readers and lighted magnifying glass to read.Compass is generically accurate, only the cardinal 4 directions. Clock maintains setting when powered down. Uses micro USB cable to USB A, generously long cable provided.I have not figured out how to trip meter/odometer or if there even is one. Amazons AI told me it has one when I asked it. If I can not find the odometer I will be returning, since I will need to use my phones gps to track millage, and whole purpose of this purchase to not need my phones gps.

Works great! Very accurate.

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.