How does the Polar® product measure heart rate?
The Polar® E600 consists of a transmitter and a wrist unit. The Polar® E600 measures the number of beats per minute at which your heart is operating.
The transmitter, which is attached around the chest with an elastic strap, measures the electrocardiogram (ECG), the electric signal originating from the heart. It provides an accurate and reliable timing reference for the occurrence of heart beats. After picking up the electric signal from the heart, the transmitter will transmit it to the wrist unit.
The heart rate tells you the exertion level of your body and it will provide you with real-time information during training. The harder you exercise, the higher your oxygen consumption and the higher your heart rate.
The Polar® E600 stores 99 exercise files, compiles time in target zone/above target zone/below target zone, and is also capable of transferring data to your PC via infrared transmission. (The E600 PC Interface must be purchased as a separate accessory.)