One of the advantages of cycling is that it offers a balanced approach to fitness. It's a low-impact exercise that can help you strengthen your heart, lower your blood pressure, boost your energy, burn calories, tone your body (especially thighs, buttocks and stomach), reduce stress and tension and help you reach peak performance. Cycling is an excellent exercise because it exercises large muscle groups in a sustained fashion, which maintains your heart rate at a level high enough to achieve training effects. If your aim is to increase your weekly exercise dose only modestly, then biking to work or the like is a great way to start getting into shape.
Polar CS200Cad for Cycling only, offers all the essential features needed (speed, distance, HR and cadence)at an affordable price.
If the budget allows, The RS800cx Bike offers Speed and Cadence for MTB and Road Cycling. Comes is a sleek design that can be worn on the wrist or mounted on the bike. Measures heart rate combined with current, average and maximum speed. Helps avoid over or under training by aiding you to train at the right intensity. Optional accessories can be added to this model is GPS or The Polar S3 Foot pod if you are a runner. Oh yes, this model also offers speed, distance and Pace for Runners.