Review on XOSS X1 Bike Speed and Cadence Sensor: Wireless Bluetooth 4.0 Computer for Accurate Bicycle Speedometer (2 Pack) by Cody Hunt

I bought a full pair of sensors for my road bike to use with my Garmin head unit. They were easy to install and set up and connected to my Edge 530 with no problems. The speed sensor seems accurate, the cadence sensor data was questionable, but since I had no comparison I accepted it as accurate. After about 6 weeks of use, the sensor used to measure cadence stopped connecting. I checked and replaced the battery as it wasn't showing full power. After changing the battery, it could no longer connect to my head unit. I tried several batteries, removing and replacing them to make sure the indicator light was within cadence sensor specs. After numerous attempts I have come to the conclusion that it is defective. I've seen other reviews indicating this is an issue with these devices - some randomly fail without warning which is a sign of poor quality control. I visited the Xoss website and emailed the support team asking for advice on how to proceed. Having received no response, I, like other reviewers, have to conclude that they don't care about product quality or customer service. While this is a harsh review, I am disappointed that this company offers what appears to be a good product but does not endorse it. Products. Meanwhile, they also sell higher-level related products. I have to wonder how reliable they are - do they deny customer support as well?