My dash lights don't work so this is great for me.just plug in and let it do its thing.it takes a little bit to start but after it starts it's accurate according to my speedometer in my car.

Put it onto a motorcycle . I did not want to look down to see how fast i was going . Its mounted directly onto the windscreen. Now i can do a steady cruse without worry about not going fast enough or well over the limit . Now if a person drove like a normal person you will not have any delay of the speed monitor catching up. A person on a race track this will be slightly delayed. Its made for road use . Who looks at speed on a race track ? We look at times .

I bought the VJOYCAR C60 several weeks ago and am using it in a 2019 vehicle that has a digital Km/h display but not mph. I wanted digital mph also. The GPS speedometer works perfectly. Everything advertised about the unit is true. Set up is no more complex than connecting to USB power. It takes perhaps half a mile to lock onto a satellite and do its housekeeping before speed is displayed. Out of the box it was within +/- 1 to 2 mph.

I did choose to recalibrate the speed slightly. This achieved by pressing and holding the up arrow and enter buttons at the same time. I found that pressing the up arrow just slightly prior to pressing the enter button got me into the calibration subroutine every time.

Another nice feature is upon stopping, such as a traffic signal, the trip mileage followed shortly by trip time in minutes are displayed. Stop signs tend not to be long enough for this feature to activate. Mileage and time are displayed in whole numbers (no decimals), so the longer the trip, the better the data.

Now, there are what appear to be a number of similar devices out there brand labeled by each reseller. The nice thing about the VJOYCAR reseller is that he contacted me personally after my purchase to deal with any issues. I had not noticed that the unit requires a wired USB connection for power, so he kindly supplied a 12 volt adapter so I did not have to sacrifice my USB connector normally used for phone and music.

All in all I am happy with the device. The true test will be our Midwest winter temperatures, but for now I'd buy it again.

Overall rating 5 Star Review
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ANY other clients who have any problem, pls contact with us,( VJOYCARLTD) THIS SELLER, named SUKE This product is Durable and does a great job , C-80 has a nice large screen and easy to Read, C-80 works very well

I am very happy with this purchase! Here's what you can expect:

The unit comes with a small mount and some 3M tape, which can be applied to the mount or directly to the unit itself. I added some Velcro to mine. After you plug it in, it will take a minute to find the satellites.

As others have mentioned, you will probably need to calibrate it. This is easily done with the help of a passenger. I recommend calibration at 70mph+ (when safe and legal to do so of course) for best results. You only need to do this once, after which the unit will display your speed with a high degree of accuracy.

The unit is fairly responsive. Not the instant response of a stock speedometer of course, but still pretty good. For a GPS receiver I was impressed. Perfectly acceptable for everyday driving.

The display itself is large and easy to read. The manufacturer really dialed in the brightness perfectly. I drive a convertible and can still read the numbers even in direct sunlight. At night, the unit is bright - but not too bright, although it is close. Any brighter and it would be distracting; any dimmer and it would be hard to read during the day. Again I was impressed.

If you're looking for an accurate, responsive, easy to read speedometer, you won't find a better one at this price. An excellent value for the money; you really can't go wrong.

I wholeheartedly recommend this item.