Bike Computer, LCD Backlight Automatic Wake-up Multifunctions Cycle Computer Wireless Waterproof Bicycle Odometer Speedometer for Performance and Racing(Wired Bike Computer)

I've tried several bike computers and the design and features on this model should have been the best. I was disappointed. Not only did some of the program features not work, the screen is too small to show all the information so you can read it. It didn't matter, however, because the wire was too short to mount the computer on my handlebars.

This thing sucks. The instructions are terrible. And when I actually ride the bike the speed only reads 3 miles an hour no matter my speed.

It works well

Chart for calibration of specific tire sizes does not show mine. Useless for accurate mileage/speed calculations. Returned

I've installed multiple bike computers over the years. This thing? Everything about it is bad. Buy a cat eye or something else, just not this.

Do not buy these. I bought THREE (my mistake) because they had good reviews on Amazon, and I felt like I could trust it. I bought it end of December 2019 as Christmas presents. I just got around to installing them on my kids' bikes (May 2020). I was well beyond the return window for Amazon. 2 of them just did not have any connection between the sensor and the main computer unit. I assumed that it was a bad battery, although 5 months shelf life is a completely reasonable expectation. The battery is some strange type that no-one has on hand, which means I'll have to spend another $10-15 bucks on batteries. The third one would get connection, but I was not able to figure out a way to install them properly on my kids' bikes. We have standard Trek mountain bikes. The front fork (or really anwhere on the frame), there was not a place I could mount the sensor so that the magnet on the wheel would be just 4mm from it. I emailed the manufacturer a week ago regarding the other two units that did not work out of the box, but no response. I don't expect to hear back, but if I do, maybe I will update this review. I don't plan on getting new batteries for these either because even if I did, I wouldn't be able to mount the sensor properly on the bike frame. Basically, if I could start over, I would not purchase these and try something else. Amazon, you've got to demote this listing...!!!

Totally defective product