It uses only the wrist-worn device that reads the electronic signal released by the heart through the fingers pressed on the device for a given length of time. The two-part heart rate monitor on the other hand is composed of the strap and the wrist unit. The belt strap reads the heart rate measurement and acts as a transmitter. But the fact still remains that it would not give you the right monitoring you would need to move one step further in reaching your goal, which could only be done if you would use one particular device: heart rate monitor. This makes Nike heart rate monitor comes into the picture. Nike heart rate monitor is a revolutionary device that would enable you to check the status of your heart every time you demand it. When you need a cardiovascular fitness, there is one part of the body you should monitor: the heart. And with the data a wristwatch heart rate monitor can give, you can now know the activity of your heart which would make you more conscious about how to train. With the wristwatch heart rate monitor, you can now know if you are training too hard and need to slow down or if you are training too weak and you need to pick up your pace. A normal best chest heart rate monitor could have battery that could serve for several years and require to be charged. The main problem here is that most manufacturers require you to send back the belt chest to recharge the battery. The point however is to ensure that you get a belt chest heart rate monitor with battery that could serve you for years. Memory: To be able to record the data of your previous training, you should need a heart rate monitor that has a good memory storage capacity. It is important to note that the lesser memory size can normally record 1 to 2 training sessions while heart rate monitors with large memory storage can record multiple heart rate data. However, Reebok heart rate monitor does not only serve individuals on training. Reebok heart rate monitor can also be used at home where you need to monitor your heart rate. It can also be used anywhere you go whether driving your car or taking a walk to the park. For Reebok heart rate monitors are usually worn on the wrist, there are several features to add more functionality on the device.