The CS600 is for both the professional cyclist and for the cyclist who wants to ride with the best. The CS600 with the updated Power Output Sensor™ W.I.N.D is the market's most complete cycling system to plan, monitor and analyze your training.Polar exercise featuresWireless ECG accurate heart rate.Polar sport zones.Polar OwnZone®.Polar OwnCal®.Polar Fitness Test™ with OwnIndex®.Polar OwnCode® (2.4 GHz) W.I.N.D.Polar OwnOptimizer™.HR-based tar