Part II

Heart Rate display (Optional)

When the watch detects your heart rate, it will be displayed on the lower screen in the Chrono Mode as followed:

Blinking "" means that the heart rate receiver is activated. Blinking "" means that heart rate signal is being received.

Blinking " - " means that there is an error in the heart rate signal being received.

"TZ" and Heart Rate reading (displayed in BPM or Percentage) means your heart rate is in the target zone.

Blinking "TZ" and heart rate reading (displayed in BPM or Percentage) flashing means your heart rate is below the target zone.

Blinking "TZ" and heart rate reading (displayed in BPM or Percentage) flashing means your heart rate is above the target zone.

Tips:

When the stopwatch is running, you can toggle to display your heart rate in BPM or Percentage by pressing SET Button A in the Chrono Mode.

Start Your Exercise

-From the Chrono Mode, press STR Button B to activate the stopwatch and start measuring the exercise data.

-Press STP/RESET Button C to stop / pause the stopwatch, press STR Button B again to continue the exercise.

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Acumen Stopwatch manual Heart Rate display Optional, Start Your Exercise