This digital technology is also effective in assuring that the Timex heart rate monitor would not interfere nor receive interference with other heart rate monitors nearby. This in return ensures that every data the Timex heart rate monitor gives is accurate and synchronized. Another good thing about the Timex heart rate monitor particularly on some specific models is the Timex Bodylink system. Strapless Heart Rate Monitor and the Conventional Heart Rate Monitor There are two major types of heart rate monitors: the one that uses a strap and the strapless. Most of the manufactured heart rate monitors today are composed of two major parts: the chest strap and the wrist unit. The chest strap acts as the transmitter to which the heart rate is measured. 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. In many cases, discount heart rate monitors are found on special sites. Both have similarities but both present advantages and disadvantages. The belt strap heart rate monitor and the strapless heart rate monitor both can accurately provide the user with accurate heart rate measurement which is impossible with manual method. The main advantage of the belt strap heart rate monitor on training is that the user can have an instant access on the status of the heart anytime he/she wishes to. The doppler fetal heart rate monitor uses high frequency sound waves that lets you hear the sound of your baby s heart beat through an audible device sometimes an earphone or a speaker that is usually built-in on the heart rate monitor. In order for this wave to travel, the doppler fetal heart rate monitor is aided by particular liquid often a lotion, oil or water. 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.