Replacement centre module (only) for the Polar WearLink® H7 transmitter.
Polar H7 heart rate sensor gives you live heart rate on your mobile training application, to make the most of every session. In addition to low energy Bluetooth smart technology, the H7 heart rate sensor uses coded 5 kHz transmission to connect with the majority of Polar training computers on the market and with compatible gym equipment.
Note. not compatible with the Polar models that only use the W.I.N.D. 2.4GHz heart rate transmission. ie. RCX3, RC3GPS, CS600X etc.