Polar's WearLink+ W.I.N.D. Transmitter sends heart rate data to your wrist unit. It's secured by a comfortable, adjustable elastic strap and is coded to prevent interference with other heart-rate monitors in the vicinity.
Features and Information
The WearLink+ W.I.N.D. Transmitter is compatible with Polar's CS600X w/Power, RS800CX Pro Team, CS500, CS600X, RS800CX Bike, RS800CX Multi, RS800CX, and RS800CX Run heart-rate monitors.