The acceptable error percentage in Firstbeat Sports v. 4.7 measurements

Error percentage means the missing or erroneous data, typically derived from poor heart rate belt contact with the skin, low battery status of the device, or interference in the data transmission during the real time monitoring.

The indicative classification for the data quality based on the error-% is:

• <10% Excellent
• 10-25% Good
• 25-35% Moderate
• 35-50% Fairly poor
• >50% Poor

If you need any further assistance, you can contact Firstbeat Support.