For cycling and cross training, the Polar CS300 Computer / Heart Rate Monitor is the optimum choice for cyclists who like to get their cardio fitness from sports other than just cycling. Its versatility means you can either wear the CS300 wrist unit during indoor fitness training or mount it onto your bike when cycling.
Buy Polar CS300 Computer / Heart Rate Monitor from Chain Reaction Cycles, the worlds largest online bicycle store.
If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.More information on returns