Using your heart rate sensor in water

Polar H10 is water resistant. The Polar GymLink technology can be used in water activities, but Bluetooth® or ANT+ wireless technology will not work in water. Please notice that sea and pool water are very conductive, and electrodes may short-circuit, preventing electrically measured signals from being detected by the heart rate sensor.

When using a bathing suit, the best performance is achieved by wearing the heart rate sensor underneath it.

See chapter Sensor settings for instructions on how to turn the GymLink transmission on from the Flow app.