Car Digital Speedometer OBD2+GPS Head Up Display HUD Overspeed Alarm RPM Water Temperature Turbo Pressure Universal

Easy to install, got one for both of my husbands cars!

No problem

It's overpriced for what it offers the only feature that works is the MPH all other components are nonexistent.

Looks really nice and is a nice size. Oil temp and coolant temp do not work. Stuck on 32. I have a 2009 honda fit. It's a nice product I bought it ao I can read my water temp but unfortunately it don't work. Will return and look for another one.

Easy installation to OBD port. Easy to mount on windshield.HOWEVER, at 40 MPH and above, the speed readout turns from white to red. Red on black is a terrible color combination. Almost impossible to read at a quick glance, and that is what you need.If you feel you must change color (why?), then make it yellow. Yellow/black is a high contrast combination.

Small compact and practically a replaces my whole dash board !! However don't matter which vehicle I plug it into the tacometer /rev meter refuses to workOnly the speedometer, water temp ,oil temp and gps works

These (P1 HUD) are actually quite useful. When they work they will display a number of parameters.I was able to watch oil and water temp, tach, mph with either OBD2 data or GPS data, mpg short and long term. There are other parameters that are useful as well.The downside, they won't read out in Fahrenheit, the first unit lasted about two days before it failed. It wouldn't show most data. The seller quickly replaced it with another one and again it wouldn't show temps in Fahrenheit and after just 3 miles the GPS failed.I ended up returning them both for a refund.They are useful but not reliable. I wouldn't recommend based upon durability.