Manual heart rate checking would require you to stop either in the middle or at the end of your run. Either way, you still have to stop. And by doing so, you would interfere on your whole run that would destroy your pace. With wristwatch heart rate monitor, there is no need to stop just to check your heart rate. To simply put it, the transmitter would send signal directly to the receiver then the receiver translates it to readable data without the risk of receiving other signals from other heart rate monitors. Functional Most Cardiosport heart rate monitors are packed with functional features needed for a total fitness and exercise companion. This would mean that the heart rate monitor determines how fast, how long, how hard and how much effort the user should exert in order to meet the targeted workout program. And no other exercise equipment could do that except a heart rate monitor. Another unique feature of a heart rate monitor that surpasses the ability of a private fitness instructor is its capability to count the number of calories burned during the whole exercise plus the capacity to estimate the percentage of the fat burned. It also does not mean you have to order immediately the particular heart rate monitor recommended by a friend. And, buying would not mean you have to take the top of the line heart rate monitor equipped with complete features and the latest technological breakthroughs. While these would be good reasons to buy your first heart rate monitor, it might be unwise. And with the length Nike has been in the market offering top quality sportswear such as shoes, shirts, and pants, and equipments such as bags, different kinds of sports balls, and others from different sports arena, it is just right that the company would also give its consumers the right fitness companion. This is possible through an alarm, both audio and visual, that would send a signal if you are out of your set zone. 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.