I've had this product a little over 2 weeks. When comparing with Garmin edge 520. It works fine with zwift. There were no problems with the flight. Zwift dropped out but it kept reading my pulse but not my strength but I think that's his problem with Zwift. The setup I use is the P1 pedals. So far I am satisfied with the product. The distance from the power meter to my heart rate sensor is about 5 feet.