• support@fourthfrontier.com
  • I am a new X2 user. I am recovering from surgery and so have not had full speed workouts yet. Will X2 calibrate my Zone parameters as I get back to full speed based on my personal data such as highest heart rate. My current zone ranges are reading as follows: 1: 143 (So far the highest heart rate I have recorded is 135.) or are the…Read More

    1 Comment
    • Hi Scot,

      Thank you for your question, and welcome to the Frontier X2 community!

      For your reference and to help you better understand how heart-rate zones work on the Frontier X2, we are sharing the website link for the Heart Rate Zones below. This will give you a clear idea of how the parameters are calculated and when manual adjustments may be…Read More

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