Upgrade T800 Universal Car HUD Head Up Display Digital GPS Speedometer with Compass Speedup Test Brake Test Overspeed Alarm 4.3" HD LCD Display for All Vehicle (GPS Model)

Works exactly as I hoped, with three minor annoyances.1. The display has plenty of room to accommodate a larger font. I use the combination of speed, time and compass. The speed and time are OK, but the compass could easily be twice the current size.2. User manual has impossibly small printing. I had to scan it and view the scans on my computer. The information is contained is also very brief. It took a while to discover how to achieve the display I wanted.3. Please hire a professional tech writer to redesign the manual and post it with the sales page.4. Does not use polarization--clearly visible through polarized sunglasses.To protect the device from the sun and make it easier to read, I mounted it in a small plastic tray. The display has good contrast, easy to read in daylight. ; Does not use polarization--clealy visible through polarized sunglasses.

I upgraded the speed on my golf cart so I wanted a speedometer solution that would be easy to install and not cost a ridiculous amount of money; I was seeing DIY devices on cart websites running hundreds of dollars! No way. This little guy does the job, just wish the screen was a little bit bigger but can't complain since I paid so little. Set up is OK, you need to play with it to understand all the features and how to change settings because there's a lot to digest- but you'll get it soon enough. It gives you a bunch of different display screens to choose from; I'm using the Speed/Time/Direction screen that's my favorite. Speed is on top in large font, time (military) on the bottom left and direction on bottom right in smaller fonts. My wish for the screen to be larger revolves around my choice for display; the bottom left and right fonts are a bit small to easily see. But since this is in my golf cart it's not so far away that I can't make them out. If you had this in a car you'd need it pretty close to the steering wheel in my opinion. Install is simple, I plugged it into 1 of my USB outlets for power. You get a long cord with a cigarette lighter plug; luckily I have lots of extra USB cords so I used one. The end that goes into the unit is a USB type B mini, so keep that in mind. They give you double-sided tape for mounting but it's a bit weak; not a problem I have plenty of my own. Overall this is a homerun if you want a cheap speedometer solution.

I'm glad about this unit. It is easily installed. It gives info with apparent fonts that are effortlessly read on driving. It's a helpful esp for old cars with a low or deep dashboard with no digital speedometer. I give four stars for two things. The unit is mounted by a double adhesive tape, which is not strong enough and cannot be transferred easily between cars. That means you cannot travel with this unit or put it in a rental car. Worth mentioned, it comes with one extra adhesive tape. Also, the unit does not show the location on any screen, latitude, or longitude, as written in the above title. You get only the time and the direction, no GPS location. It gives only the number of GPS satellites. I hope next versions care of easy mounting in multiple cars, for travel and care about adding location coordinates.

I bought this because I can't see close up and can't see my speedometer, so a friend recommended this and I attached it to the top of the steering column and plugged it into the cig outlet. Provides gps cords, speed, voltage, direction, et cet. Really great purchase especially if you have problems seeing your dash board.

It is a solution for a 2021 Toyota Highlander Hybrid that has NO built-in compass at all. This device works pretty well. I do wish it had a compass heading numerically instead of speed, and a NSEW letter once not twice visible. Due to too much metal in this particular hybrid vehicle, no magnetic compass we tried of many would work. This device uses GPS sensors to gather its data. At its simplest settings, in the mode I prefer, it works well at adding a NUMERICAL speed and small N S E W where-ever you want to place the 2.25 W x 2 inch H (roughly) 6 cm W x 4.8 cm H display. You can get a compass numerical heading but it is within a page of other many other statistics. Not the greatest solution to my need, but not a horrible one either.