It makes everyday exercise a lot easier and more enjoyable through its several exciting features although its main purpose is to measure your heart rate during training. Some heart rate monitor can design a specific workout program for the user. 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. Other heart rate monitors can count the number of calories you are burning and the total calories burned during the duration of exercise. Heart rate monitor of high class has the estimation of VO2 and altitude measurement. Some heart rate monitors have memory banks that would store the data gathered during the duration of the exercise. It provides a continuous reading on the status of the heart which is very reliable during long training duration. Higher end belt strap heart rate monitors can be computer compatible or contain high memory storage capacity that equates to larger room to save data for several days of training. Its main disadvantage on the other hand could be the inconvenience the strap provides on the user. All mentioned Polar heart rate monitors are suited for fitness conscious individuals who want to be guided during their daily workout and exercise. Creating an improvement with the running routine, athletes, trainers, runners, and health conscious individuals should have the S120, S810i, S610i S410, S625X, RS 200, RS100, and RS200sd. Also, others might give discounts on heart rate monitors because there are newer models to be released and the older ones must be disposed immediately. There is nothing wrong with it since there is not much of a difference when you get discounted heart rate monitors or not. Newer version could have little difference with the discounted unit. Timex Heart Rate Monitor What would you get when the heart rate monitor technology is utilized by one of the leading sports timepiece makers in the world? You get a one of a kind, technologically advanced, and world class Timex heart rate monitor. As a globally acclaimed company in the sports watch industry, Timex has ventured in making the conventional wrist watch into a heart rate monitoring device capable of providing accurate heart rate measurement in whatever field of training, exercise, and fitness activity the user wants to take it.