• Comfortable, lightweight textile coded WearLink transmitter/electrode belt set
• For use with M-series and S-series heart rate monitors
• Changable battery, battery lifetime two years in active use
• Water resistant (30m)
• Machine washable strap, coolwash 30°C or handwash
• Easy to put on and take off with the front connecting clip

You may swim with the WearLink transmitter, but you may experience interference in pool water with a high chlorine content and sea water, which are both very conductive causing the electrodes to short-circuit preventing ECG signals being detected by the connector