• support@fourthfrontier.com
  • Training day Z2

  • Starting weight traing

  • How does my device compute VO2max without measuring O2 and/or CO2?

    1 Comment
    • The Frontier X2 calculates VO2 max during your workout by continuously monitoring heart rate and heart rate variability (HRV) using advanced continuous ECG technology. This real-time data allows for accurate VO2 max assessments based on your actual performance rather than relying solely on estimates.

      However, if you would like to know more about…Read More

  • How do i wash the strap?

    1 Comment
    • Hi Trevor, thanks for your question!

      You can wash the strap by removing the sensor and then hand-washing the strap with mild soap and water. Please avoid machine washing and do not submerge the sensor in water.

      For more details, you can also check the product information here:
      Frontier X2 Chest Strap

      If…Read More

  • Can I go into the sauna with this device on?

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    1 Comment
    • Thank you for reaching out to us through The Community
      We would like to let you know that the device has been tested and certified okay in a temperature of a maximum of 55 degrees Celsius. We would not suggest it to be used in any environment beyond the tested temperature.

      Operating : 0 – 45 degC,
      Storage : -10 to +55 degC
      We hope your query…Read More

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