Wireless Bike Computer, 20 Multi-Functions, Real Waterproof Bicycle Speedometer, Cycling Odometer with 3'' Large LCD Display(Simple to Read), Easy to Use

This bike computer is much improved over similar, but smaller ones that provide all, or most all, of the same functions this one has. Most all these bike computers utilize the very same programming method for set up and use. I've owned several of these small bike computers over the past decade or longer. They work, but often times are not very accurate unless you have correctly measured & inputted the actual circumference of the wheel. This bike computer is no different in that regards. What is different is that it is now clearly stated what the number is that you are inputting into the bike computer when you first turn it on. It's the circumference of the wheel/tire combo measured in MILLIMETERS. In addition, you are shown the most precise method to determine that measurement if you are looking for accurate speed & distance. If you are a stickler for super accurate info, you can check the results you get against a known distance to confirm if the circumference you programmed in was accurate enough or whether you need to remeasure the circumference again and reset/reprogram the computer a second time, which BTW, is very easy to do if you've done it as many times as I have! (One other thing - make a note for your records of the circumference number you program in for future reference because at some point far down the road the battery will need to be changed and you'll have to reprogram the computer all over again. Having saved this circumference measurement will save time and make things a lot easier for you. Also save the odometer reading if that info is important to you. It is very easy to update the odometer reading after resetting these bike computers.)Improvements of this bike computer over competing versions: 1.the Enlarged Display Size; 2. the Built-in Transmitter position adjuster; 3. the New & Far Improved Magnet; 4. (my most important reason for selecting this bike computer) the Automatic Start feature. This was & is the primary reason for me picking this one over cheaper models. I don't know how many countless times I've stopped during a ride to have a drink of water, check a text or fix something & forget to turn the computer back on after it timed out and went to sleep. Not anymore. You can turn on the display the regular way by depressing the mode button or you can begin riding and about 20s later the head unit turns itself on. I've been wanting this feature for years now and finally I have a bike computer that has it. Regarding the newly designed magnet & adjustable transmitter mount, both of these designs are superior features compared to the older style and make it a breeze for you to position both together almost anywhere on a spoke. Trust me, these two features are far better than the older designs. You'll never want to install the other type after having these. One last thing, the listing isn't all that clear regarding the fact that in addition to the stand-off mount for the display unit, you can mount the display directly to the handlebar which is my preferred method. Bottom line, this model is your best choice if you prefer having simple biking information available that doesn't require GPS. Now I almost wish my old ones would die so I could replace them with this model!

I love the way this product automatically shuts down after use and turns on automatically when you start moving. Seems to be quite accurate once you get the measurement of tire correct. You have to convert all measurements to mm when inputing. Very user friendly to input. The only reason I didn't give it 5 stars is because I don't care for the mounting of the unit on handlebars with a big zip tie. Seems to loosen up occasionally when riding.

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.

Updated my hardwired bike unit for this one thinking it was a step up.I like the large display and features, however ....The distance measurement does not work properly. I measured the accuracy with surveyed posts on various bike trails. Sometimes it's accurate within 10 feet per mile, and other times its off, literally by a mile and one half!Double checked the magnet/pickup distance and replaced battery (offered with original package), but still the same.My primary reason for buying this is to measure my speed and distance with relative and consistent accuracy and this unit has failed.Too late to return it as having purchased during the non-riding winter month (Feb).Very disappointed.

Great price, fast delivery, easy to install, big display is very easy to read and to go from function to function, liked it so much just ordered another one for my wife’s bicycle! 👍👍