Heads up Display for Cars Car HUD M7, Digital Speedometer for Car OBD/GPS Smart Gauge, Driving Speed, Engine RPM, Voltage, Water Temperature, Etc.., Speedometer for Car Works Great for All Cars

A quick TLDR; here at the beggining, I love this device and would highly recommend it if your even considering trying it out. It's definitely worth it! Now to go into a little detail about it. At first I was worried that this would not show up/reflect well off of my windshield like I wanted to have it do. However, this package came with not only a grippy mat, but also a reflective sticker, more like a cling, to put on the windshield to enhance the reflection. This works really great and I added two pictures of what it looks like in the worst of times (direct sunlight) as well as the best of times (in shade). It looks great and is easily readable at both ends of that sunlight brightness spectrum. The reflective sticker is sort of closer to a cling, with one side sticking better that the other which made it easy to figure out which way to put it. Also, since it wasn't extremely sticky, I was able to replace it numerous times to get it in the exact spot I wanted. If I was going to nitpick something, I would've liked this sticker to be slightly bigger, but it does show the whole display when placed perfectly. The reflective sticker also does not allow anyone to view the display reflected on the windshield from the outside. Plugging this into the OBD2 port was pretty self explanatory. The cord is flat which makes it easier to route between plastic dash covers as well as push it down into the dash so it's pretty much not visible for me and looks like it's built in the way. The menu navigation was a little tricky to figure out while having it installed, so I would suggest getting all the settings done before you route your wire. Once you have it in though, I don't really see any reason to mess with it. It turns on extremely fast as well so there is no waiting for it to start up once you start the car. It's ready to go as soon as you are. The size of the unit is okay. It would be nicer if they could get it to be a little thinner, but ultimately it's completely fine as-is and is out of the way. As for durability, I have only had this unit for a couple of weeks but haven't had any issues. I will come back and update this review if it ever stops working. I have pretty high hopes for it though. Overall I'm extremely happy with this purchase. I bought it to bring in a digital speedometer to my Ford F-150 as I got used to a digital display in one of my other cars. At this price point, it really does a great job!

It has a about a second or two delay compared to the digital displays in modern cars, but not really too big of a problem if you are maintaining speed. If I am driving city and need to be at 35, it does it's job well enough. Sadly, you cannot see this when wearing sunglasses. The numbers just vanish from the windshield. It's fine without sunglasses though, and looks great at night. Clean your dash as best as possible. The sticky pad will connect dirt and not stick any more. If this happens, wash it under the sink and let it fully dry. It comes with a USB cable and an ODB2 cable, so you can power it with either or.

I set up HUD M7 using OBD connecter and no any problems.Mahjong

It's a very nice device (while it works), has the minimum I really needed for an HUD (to show the speed in the windshield so that I don't need to take my eyes off the road while driving), but the longevity is pretty bad. The device looks good, works good while it's brand new, and it might keep working if I would remove it from the car every time I get off, and I just plug it back in when I get back in the car, but if it's left inside the car, I believe the heat damages it and it would just stop working (by showing 0 in the speed, or simply not showing anything or just get stuck showing any random speed you were doing when it failed). Right now it just doesn't work at all and I'm stuck with 2 of them that are just completely broken and I have been unable to find out about the warranty for this item. Save your money until they develop a better version that would last longer. And I have to say I was using it during spring, when it wasn't really that hot (higher probably in the 70s, lower in the 40s), but we know that cars get hotter while parked under the sun, and it just no longer works. I'm unable to return it as it's been over 30 days when it failed and I'm left with 2 broken devices that worked great for a few weeks.

Works but is very inaccurate. Connected to the OBDII port it should display the exact same speed as the vehicle speedometer, but the faster you are traveling the more inaccurate it becomes. At 55mph it displays 72mph. At highway speed of 65 it displays 87 mph. What's the problem with the programming in this device?

Finally! I have a temp gauge. It took me a good while to get it to show me the coolant temperature, but eventually, I got there. The display is easy to read without the added reflective material provided. It's small enough that you won't notice it, but displays very large. I live in an area that gets over 100°F regularly during the summer. Driving uphill with the Air Conditioning on was nerve wracking....just wondering when a water hose would explode. I didn't know how hot the car was, now I do & I can avoid that possibility.

Wonder display, great Value,

Works with my 2025 Acura TLX. Shows speed, rpm, battery, fluid temps from the OBDII port. Now I need to see how long the device lasts.

Fonctionne tres bien, agréable a utiliser, aurait apprécié un précision que le collant reflecteur allait dans la vitre lors de la lecture des instruction

Bought my first one of these on one side of the world 5 years ago, and it’s still almost completely functional. Now I’ve moved to the other side of the world and bought it again - I love being able to see my speed on the dash. Wouldn’t bother with the reflective film on the windscreen as I don’t see the point. Also remember to take the film off of the unit’s display itself as this will improve the reflected image. If you think it’s not bright enough, turn off auto brightness and set it to max - for me its completely visible in everything but bright direct sunlight.

its great to view it on the windshield. wish i could make it more dimmer at night

Works well, except the cable for the OBD connection is a bit too short to do a proper installation.Had to run across the dashboard instead of hidden behind the pillar.

I liked it so much.