The Cateye HR-10 Heart Rate Kit and Belt will give you valuable physiological performance data that you can use to improve your training programme, or spot potential overtraining. Where power measures your effort through the pedals, a heart rate sensor lets you see into the impact this effort on your body. The Cateye HR-10 is compatible with Strada Digital, V3N and Q Series. The strap stays flat against your skin and doesn’t rub or chafe as you ride. Cateye HR-10 Heart Rate Kit and Belt Features 2.4GHz sensor Will give you valuable physiological performance data Improve your training programme, or spot potential overtraining