YS SY Bicycle Speedometer and Odometer Wireless Waterproof Cycle Bike Computer with LCD Display & Multi-Functions

Great product and easy to install.

Update: After messing with this thing for several weeks I find it to be completely unreliable. It'll read great one day and the next day it will vary between showing zero MPH and 15 MPH. I don't know if the cell phone that I carry interferes with the wireless signal or what but this thing does not work well at all. What I wrote below was how I felt in the middle of my trials.The physical installation is not difficult - tie wraps and such. No big deal. What is difficult is working out the distances along with the particular configuration of your bike.The distance from the computer to the sensor is critical. You get beyond or even close to the 60cm distance from the computer to the sensor and you will get very erratic readings or no readings at all. Same with the 3mm distance between the sensor and magnet. 3mm is about 1/8 of an inch!I have a trail bike with wide forks. That presented an issue in getting the sensor close to the magnet AND also having the sensor not too far away from the computer. I had to try about 8 or 10 configurations where I finally ended up with the sensor tie wrapped on the INSIDE of the fork up close to the brakes (had to keep within the 60cm distance from sensor to computer) which allowed me to get the sensor and magnet within the 3mm distance as well.Once I got those distances happy and figured out how to mount the sensor in the wide fork spacing, everything worked great! Nice features on the computer and you can tune the wheel diameter to get the mileage distance more accurate.

Works well, satisfied with the purchase

worked as expected. Hope i received better and clearer instructions.

Make sure that you keep the owners manual nearby. You'll need it every few months when the battery dies to reprogram the computer. When the battery dies, it looses all settings including the miles on the odometer.

It is a little difficult to set up but happy with the product.

My father-in-law recently purchased an electric scooter and he wanted to know how fast he was moving up and down the sidewalk.At times he has a hard time installing small items like this but he didn’t have any issues doing it by himself.He said it’s been pretty accurate, and the battery life has been really good as well.Display size is good and he’s able to read and understand the screen. Good item for a part time speedster.

Reasonably priced and works, but not without 3 problems in my case. 1) Setting up the sensor on my front fork was difficult because the length of the fastening bolt provided did not allow the sensor to get close enough to the little magnet that you affix to a spoke. I had to fool with it extensively to get it to work, but it is not ideal. 2) After using it for a couple months, it lost its programming for no apparent reason (not dropped or rained on). There is no reset button so I had to remove the battery, wait, then reinstall it to reset and reprogram. 3) After a couple more months use, I could no longer reset the distance traveled to zero using the control button (long press), but had to remove the battery for this too, which is not exactly inconvenient.