But the with eh Timex Bodylink system, the distance and speed is calculated with the use of GPS satellite system. There are more significant features Timex heart rate monitors have but the two mentioned above makes Timex apart from other heart rate monitors of any brand. Timex assures you get the best and most accurate heart rate reading while providing other functional features to every heart rate monitor they make. The heart rate monitor will eliminate such problem at the device will enable the user to determine if he achieves the desired level of training intensity. Pacing during the competition: When you are on the race trying to beat all other contenders, you also have to know when to step on your gas or when to slow down. In order for this wave to travel, the doppler fetal heart rate monitor is aided by particular liquid often a lotion, oil or water. The liquid is applied on the mother s belly that would let the sound waves to travel from the heart of the baby across the belly through the monitor. The doppler fetal heart rate monitor can be used on expectant mothers carrying as early as 10-12 weeks old fetus to the moment you are about to give birth. 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. Newer version could have little difference with the discounted unit. Discount heart rate monitor in this case may be an old stock but still fully functional complete with features that are right for your needs. You just have to bear with it but who cares, as long as it is discounted and suite your need it is always okay. Best Heart Rate Monitor For You The best heart rate monitor neither come with the price nor with the brand name it carries. It neither measured by the number of features nor its color. Although there are some heart rate monitors that are indeed considered to be the best in terms of style, comfort, features, and price, the best heart rate monitor can only be judged by a particular user since not all heart rate monitor would fit to the needs of every individual.