Since I have had the device it has not synced to my smart phone I have tried everything and it won’t sync. I also had trouble getting it to work with the cadence tracker. The instructions don’t tell you about synchronization to any device I had to go on line

I bought the speed and cadence sensors along with the coospo bike computer and I must say they are pretty accurate. So far I have had no trouble at all setting up the sensors on the bike and linking them to the coospo bike computer and the app. It sees them right away. Waiting for the power meter sensor to come out so I can purchase that one as well. Overall the products function as they should and are relatively easy to setup. I give these sensors on a scale to 1 to 10 I would have to give them a 10. 10 being the highest.

Really happy with this BC-200 bike computer w/ the speed and cadence sensor. Set up was pretty easy, extra points for sensor LEDs that acknowledge pairing. Easy to pair to heart rate sensor. Easy to customize the display info layout. Nice large screen size. Good battery life. Nice handle bar mount. Gotta say, for the price this unit is a winner. I did not download the app for fear of Chinese misuse of personal data. The one thing to know is the unit ships from China, so plan for that length of delivery. But for the price, I recommend this bike computer.

Easy to install and I am very satisfied with the purchase of this sensor not expensive and its accuracy is not bad it really works.