The cateye strada smart computer with speed cadence and heart rate sensor allows you to use what you already have and wont realise the most powerful cycle computer yoursquoll ever need in your pocket your smart phone the strada smart utilizes the technology held in your smart phone and neatly displays it in a compact head unit on your bike it39s simple all you need to do is download the free cateye cycling app to your phone then set up the bluetooth mirroring to the strada smart head