Press the button of your BPM once to turn it on. Note that if you press the button during a measurement, it will stop the measurement.
Press and hold the button of your BPM for three seconds to turn it off.
Press the button of your BPM once to turn it on. Note that if you press the button during a measurement, it will stop the measurement.
Press and hold the button of your BPM for three seconds to turn it off.