A:Answer FT7 is suitable for swimming and it is water resistant as long as buttons are not pressed under water.
FT7 uses GymLink frequency, which can transmit signals also in water.
When measuring heart rate in water, you may experience interference because:
The ECG signal strength is individual and may vary depending on the your tissue composition. Problems occur more frequently when measuring heart rate in water than when measuring is done on land.
Pool water with high chlorine content and seawater are very conductive. Sensor electrodes can short-circuit in these conditions preventing ECG signal detection.
Jumping into water or strenuous muscle movement during competitive swimming may shift the sensor on your body where ECG signals aren't detected.
If you swim in salt water or highly chlorinated water, or have repeated challenges measuring heart rate for swimming, consider using the T31c heart rate sensor.e