• support@fourthfrontier.com
  • Using my Frontier X with Zwift on a PC connecting using bluetooth. First time it worked perfectly, but second time (today) although the device was connected on the pairing screen, recording (red flashing LED) and signal strength was good in Zwift, no HR data was seen by Zwift. Anyone got any tips as to what I might be doing wrong ? Tried…Read More

    1 Comment
  • Hi, wonder if anyone can help/offer advice. I was feeling a bit off last night after 25 minutes on the turbo so decided to record my ECG through the night. Having woken up at 5am this morning , I felt like I’d been beaten up. Having looked at the data theres a fair few anomolies over a 30 minute period, along with sudden rise in HR and a change…Read More

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  • I have had occasional svts for years but since having the Pfizer vaccination I have developed pvcs and ectopic heart beats to the extent that I am being investigated by a cardiologist. I can’t be sure it is the vaccine.

  • How can I check my heart rhythm whilst trainings

    1 Comment
  • Just setting up my Frontier X and my question is. Will my device pair to both my iPhone and Garmin at the same time . Or is it 1 device at a time. Thank you to anyone who can answer my question.

    3 Comments
    • Yes, you will be able to do this ! You can simultaneously connect with 1 Frontier X mobile application and up to 2 other HR devices during your workouts 🙂

      • Is this a feature included with the most recent firmware upgrade? I ask because I tried to connect to multiple devices when I first got the Frontier but was unsuccessful. I’ve not tried recently though and would love to stop wearing two monitors 🙂

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