GPS Digital Speedometer for Car MPH, Universal HUD Speed Meter with LED Large Font, Plug Play for Car Truck Motor SUV Golf Cart All Vehicles (HUD Speedometer (Green Display))

This GPS speedometer HUD is a handy and budget friendly upgrade for any vehicle. The large LED display is easy to read at a glance, even in bright daylight, and the USB plug and play set up means no fuss during installation. It tracks speed accurately and adjust brightness based on lighting conditions–a thoughtful touch for daily driving. Great little tool for added speed awareness without breaking the bank.

I like the idea of this heads up speedometer, but it's execution leaves a lot to be desired. Because it's based on GPS, I found it to be very inaccurate - it reads about 10 mph fast. (so If I'm driving at 20 mph, according to my car's speedometer, it shows me as traveling at 30 mph) The big flaw is that it's useless if you wear polarized sunglasses. The polarization filters out the reflection and makes the readout impossible to see.

Well it's better than having no idea what speed you're going.... But it's definitely not very accurate and it is very bright so make sure you place it properly so it won't Blind you driving at night. The design is cool though