Key to this precision is the use of FM technology. Understand that a typical heart rate monitor is composed of two parts: the receiver and the transmitter. The transmitter is the one that is worn of the chest. It is also called the chest strap. It transmits the heart rate reading to the receiver which gives the heart rate reading to the user. Both should fit to your body well and both should be able to work together by properly submitting data from the chest strap to the wrist display. Some are heart rate monitors are coded some are not. A good heart rate monitor is coded for it does not interfere or is not prone to interference to other monitors which could result to inaccurate readings. Polar Heart Rate Monitors Polar has been making top quality heart rate monitor for quite some time. And with the years of experience and effort to create top caliber heart rate monitor, Polar has perfected in answering the needs of every heart rate monitor seeker. The complete line of Polar heart rate monitor today proves that the company is committed in giving every trainer, athlete, and fitness enthusiast the reason to keep on staying active. Meanwhile if you think that treadmill alone would do the job of getting us fit, well you can set those thinking aside. Although treadmill will give us the total body workout, treadmill is incomplete without the device that gives us report, not on the length we are going but the rate our heart is performing. These sites could offer discount heart rate monitors because they could get directly from the manufacturers on discounted price. And by bulk, discount heart rate monitors are given much lower prices on special cases. There are other sites that can give much lower priced heart rate monitor. In most cases, groups such as the police and fire departments could get discount 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. Heart rate monitor can also provide you with summary of the last exercise and the previous exercises with its memory storage capacity.