C60S Universal HUD Heads UP Display Digital Speedometer LED Screen Speed Projector Windshield Projection Film Over Speedo Alarm for Cars & Other Vehicles

This GPS Speedometer works just fine. Verified with my car and speed is only off about 1 mph either way and only sometimes. It does take a second or two to display the actual speed. Ex getting up to 55 mph and holding it will go 53 54 55 and then hold after the car is holding at 55 mph. Bought this for my old 1997 Toyota Rav 4 still going strong - speedometer decided to not go past 20 mph and this works great as a replacement.

The Mrs just had eye surgery and needs to wear sunglasses most of the time. This makes it hard for her to see the car's speedometer. With this in place she has no problem seeing her speed. Like the instructions state, it takes a little longer for it to lock onto the satellites on cloudy days but once locked it is decently accurate. Don't plan on using any of the alarm features so I can't comment on them. For what we needed this fits the bill just fine.

The product needs to be plugged in to work. Has no battery rechargeable battery. I need something with a battery.

Great product, easy to set up

Easy to install, not accurate enough

These are great little units. I put one in my golf cart. Had to go through the settings to get it to read accurately. It now reads perfect and is easy to see. Only thing I wish they would change is the power location. The side is too bulky needs on in the back for flush mounts.

I can't begin to tell how pleased I am with this GPS speedometer. One of the best purchases I've made for my 1966 VW bug. I Finally have an accurate speed indicator. tThank you.

Took this in my other car to test for accuracy before putting in the car I wanted to use it in. It was 5-6 mph different than my car that is less than a year old so I know it's accurate. Had to return