Heart Rate Inconsistent with Other Garmin Devices
While rowing with a Garmin chest belt, the heart rate values do not match other Garmin devices.
Concept2 PM4 Firmware uses a different method for averaging values than Garmin devices use. Future PM4 releases will address this to better match the Garmin method.
In the meantime, check the chest belt positioning on your torso to ensure the best read possible. Visit the How to Use page for more information.