COOLOUS C80 Universal Hud Heads Up Display Digital Speedometer Altitude Speed Projector Windshield Projection Film Over Speed Warning for Cars & Other Vehicles

Someone else wrote that their mother-in-law was older and needed something better to see the speed. I ordered for the same reason even more so because I only have one eye and this certainly is big and bright for me. Truly a blessing. I feel much more comfortable in my 2010 Ford Explorer not having to try seeing what the regular speedometer is reading! I barely take my eyes (eye) off the road.

Works well to correct manufacturers in-built speedo error. Set GPS HUD to 0 for an accurate speedo reading. Check out John Kadogan (YouTube) comments on speedo errors.

Very visible, accurate. Fairly easy to install. Reasonable affordability. I use it inside a golf cart in a share the road circumstance. You can have it buz z to warn you that you have achieved too high a rate of speed. Minor , minor thing, it's usb port is not usbC, it uses USB mini. That is not a real issue, perhaps not worth mentioning. I am very satisfied, I use them and recommend them to people in my community.

Speedometer works Great. Altitude (in Meters) not so much. Customer Service was GOOD. very responsive and courteous. They wanted to make sure i was happy. My 3rd unit works great.I have an older cargo van to haul my dirtbike. the speedo is inconsistent. Because I drive on the highway, I need to know my speed. Don't want a meeting with CA Highway Patrol! I tuned the unit while also using the App waze. this unit is very consistent! I placed the unit in front of my speedo in the van so I don't need to divert my eyes far from the road. The character height is great. Day or night, No visibility problems!! you can leave it on full time or turn it off.Altitude is an indicator, but not accurate. I don't care for the beep that happens every hour.

It takes a long time for this thing to latch on to satellites, like 3 minutes sometimes even more. However, once that's done it works fine. If you hit the brakes real hard you'll see that it's a bit slow to react, but under normal circumstances it's all OK.