As at least one other reviewer experienced, the tire “sending unit” seems to have stopped transmitting. New batteries, resetting the unit, repositioning: nothing seems to work.Too bad, too, because prior to the enexplained breakdown it worked great. 🤷‍♂️

I’ve bought this multiple times. Love this bike computer. I hope they never stop offering it. I have multiple bicycles. Every time I get a new one I get this computer so all my bikes have the same thing and I information and operation is the same on each bike.I will buy this computer as many times as I need a bicycle computer. I hope they never stop offering it.It’s much more economical than my beloved Cateye cyclometers. I’ve tried other brands before and always ditch them and go back to Cateye. This one is a keeper!!!Love the big display. My nephew and I both have failing eyesight. This is an incredibly easy to read display. It’s intuitive to use. Only thing that confused me at first was the backlight. I’d accidentally turn it on and couldn’t get it to turn off. It’s not a button. It’s a touch sensitive case on the lower left corner. Just tap the corner by the “light bulb” icon. No button. Just touch the edge of the case.Installation and setup is simple, easy and straightforward. If you’ve ever set up a wireless bike computer, you know how to do it without instructions.As for those who say it isn’t accurate (like 1-star Kenny), I can’t say how they set it up and got 3-4 mph inaccuracy. I’ve set this up according to the instructions and only been off by tenths of a mile over 10 miles on the distance (as compared to a GPS fitness tracker app). And most of those times it was due to the tires needing to be re-inflated to max pressure.If you’re really into accuracy. Measure your wheel circumference manually. Properly inflate your tire. Put the bike on pavement with the front tire valve bottom dead center. Mark the pavement with a crayon or chalk at the valve. Roll the bicycle straight forward until the valve is bottom dead center again. Mark the pavement again. Measure the distance between the marks. Enter the measurement in mm in the computer. If you have to measure in inches then enter your measurement into a Metric conversion app or find a Metric Conversion Calculator online. Another way to get wheel circumference is by doing an internet search for “wheel factor.” The chart that comes with this computer doesn’t have all the wheel circumferences (tire sizes) available. I’ve found the Cateye brand wheel factor chart helpful. The Cateye wheel factors are different than the ones that come with this computer. Circumference is circumference. Not sure how there’s a difference between the charts. Math is math. But, there are also differences in what one tire manufacturer calls 700x23 and what another tire manufacturer calls 700x23. If you’re an accuracy person, measure it yourself. Also, I’ve had small differences in my readings and then checked my tire pressures. They were low. Poorly inflated tires can make a big difference. I ride the same circuit regularly. I can tell when my readings are off by 100ths of a mile.I’m kinda picky. But, I won’t over pay for anything. I find this inexpensive cyclometer does the job very well. I’m very pleased.

Review of Nellvita Wireless Bike Speedometer:Contrary to comment elsewhere, this is fully compatible with ebikes, equipped with conventional spokes on wheels. Plastic spokes may be too wide for installing the magnet.This unit is well engineered and that includes material and design of mounting brackets. Two types of handle-bar mounting brackets are supplied. I prefer the simpler, smaller bracket that affixes with the provided zip-ties. Installation and operational instructions are extremely detailed and clear. Just take your time. Seller specifically warns against rear-wheel mount.Most bike computers are similar. Features are basically same, irrespective of price. This unit is an excellent buy that compares favorably with the costlier Cateye Strada that I’ve used on a racing bike for over ten years. Battery consumption is negligible despite illuminated, large and clear display.Working with only one hand, due to recent surgery on the other, it took ninety minutes to install and verify functionality. Will need seller advice for unpublished input value for 20in wheel circumference.Tip: Spoke-mount for magnet consists of two pieces magnetically attached to each other. Magnet can fly off, perhaps by centrifugal force, and get lost – rendering entire kit useless. To prevent such loss I intend to wrap both pieces along length of assembly, with strong, sticky tape.

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I've always been curious how fast I actually move on my bike, so this been fun to play with. I like that it also can measure distance, time, and average speed. I have my doubts it could accurately count calorie consumption, but it's interesting to get a general idea about that as well. The screen is large and easy to read, but doesn't seem too heavy on the handlebars. It takes a bit of fiddling to get everything lined up in the installation, but it's easy enough and the video is clear and helpful. There are a couple oddities in the instructions, which I attribute to the translation. The formula given to measure circumference is R*pi, but R stands for diameter rather than radius. The diagram does clearly show the measurement as diameter, but it's a little confusing.The one issue is that the handlebar bracket is huge. Like, ridiculously large. With the ends pressed together, it measures 30mm in diameter. My handlebars measure approx 22mm in diameter. We have two bikes in the family, and both have the same size handlebar, which seems pretty standard to me. Brackets for lights, etc, are often a little too big on my handlebars, so I guess they're on the small side, but this was especially big. I had some extra rubber strips from old bike lights and used those to install it, but it took 3 layers to get it tight! It would be nice if they gave a measurement for the bracket in the description, and included some extra rubber strips for those of us with smaller handlebars, but the computer itself works nicely, and I'm enjoying it with my adaptations.