Car HUD Head Up Display, Universal KMH & MPH Digital GPS Smart Speedometer with Suction cup holder OverSpeed Alarm Fatigue Driving Warning USB Interface for All Vehicle

Great - Works well. Just have to get used to menu when defining speed alarm. Also the manual is tiny. Had to use a magnifying glass

No matter where i fit this or where I an located with my car, this will not connect to ANY GPS signal. Update i have just completed a 3 hour journey and thish rubbish thing still would not connect. I would advise anyone reading this NOT to buy it as I promis you, you will be wasting your money 😉 😡. Another update 6th May, this terrible GPS is still not connecting and the signal icon is still flashing but not connecting. There is no way to contact the seller to complain. I bought another make at half the price of this. It came the following day and after 12 seconds it connects.

The GPS speedometer is easy to set up, it connects quickly to satellites in about 20 seconds. Speed shown is in km out of the box but could be changed to mph. Good clear well lit display. Only downside is the poor instruction leaflet but it can be quickly worked out by trial and error. The suction device for today windscreen is not the best for Staying attached and works better on the dashboard. The unit is small, neat and reasonably well made; the cable is plenty long enough to mount it anywhere on the front dashboard/windscreen area.

I frequently drive to & from the UK to southern France in one day and my car has a digital 'needle' with an MPH scale. I needed a KPH display. Looking at Waze on my phone was a distraction. This device is brilliant. Small enough not to obstruct my vision but big enough to read easily. Easy to switch between MPH & KPH which it remembers.The 2.5m cable just reached my windscreen from the cig lighter socket after going around the obstacles.Auto adapts to ambient light.I read reviews about the small text for the user guide but it's not rocket science. Long-press to enter settings. Settings are numbered so find the one you want to change. Setting 5 is KPH/MPH. Default is 0, KPH. Change it to 1 for MPH.UV sunlight is a killer for screen mounted items like this & for dash cams etc. Next time you buy smoked salmon keep the foil coated card it comes on. Cut it to make a small sun barrier. Not too big or you could lose GPS signals.As for accuracy, the problem is to know who to believe. Car manufacturers deliberately overstate the speed (probably to avoid law suits). I suspect that this item is telling the truth but perhaps not immediately. It has the option to calibrate the speed shown so you can get it to match the car's figure.

I wanted a solution for the speedometer in our motorhome as is difficult to see particularly when wearing sunglasses and this small unit seemed ideal.Initially I used it in my car to check it’s accuracy and it did need a slight calibration. When installed in the motorhome it worked perfectly. Please note it’s only a small unit but it’s big enough to see and not obscure your view.Yes the instructions are not the best, but you can work it out. Also the text is a little small, but just take a photo and then zoom in!

I think that this speedo is fantastic. I bought one as my main speedo failed due to a faulty speed sensor and I needed something until my car was fixed. My car has now been repaired but I left the new speedo in as a back up. The thing is, I find that I use the digital GPS speedo more as it is easier to see. Definitely a great buy and I'm very satisfied with it.

This HUD unit arrived with minute instructions only possible to read with a powerful magnifying glass. Once read, the instructions were unintelligible. Accordingly the unit is unusable and a complete waste of money

A great addition to anyone with a Fiat based motorhome who finds reading the speedometer whilst driving difficult especially when wearing sunglasses. Instructions provided need a magnifying glass to read them. On enquiring I was sent a larger print version that helped set it up. Can be set for mph or kpm depending on what country you are driving in.