The smart fusion of soft fabrics and adaptive electrodes make it extremely sensitive to your heart’s electrical signals, so the heart rate sensor can pick up your heart rate quicker and more accurately.
Size: M-XXL fits 30-45 Inches
(measurement for strap size should be taken right below the pectoral muscles or breasts.)
Compatible With the following Transmitters (sold separately): Polar Wearlink Polar Nike + Polar H6 Polar H7 Polar WIND Polar Bluetooth Polar H1 Polar H2 Polar H3 Polar H10 Polar H9