How long a training session can I record with H10?
The Polar H10 heart rate sensor has an internal memory that can store heart rate data of one training session. H10 records HR data once per second and the training session can have data up to +30 hours.
You start the session with the Polar Beat mobile app, and Beat will download the data from the sensor after the training session when you are wearing the sensor and within Bluetooth range of your mobile device.