What are the main differences between different heart rate monitor models?
All models will measure heart rate, but they vary greatly in the amount of features and method of operation. Most heart rate monitors work by transmitting a signal from a chest strap monitor to a watch unit. A few work by measuring your pulse through your finger instead. Some monitors can even use both methods. There are also a huge range in extras that can be found in heart rate monitors. The more inexpensive ones won’t contain many extra functions, though some of the high end models carry a dizzying amount of extras. Some of these features even include GPS and odometer support .