by Fourth Frontier • Model: Frontier X Plus (FX-02)
The Fourth Frontier X Plus is a clinical-grade smart heart wear designed for athletes and individuals needing continuous cardiac oversight during physical exertion. Unlike wrist-based monitors, this chest strap provides a continuous ECG trace for up to 24 hours. It features real-time vibration alerts when user-defined cardiac strain thresholds are reached, and it monitors breathing rate alongside heart rhythm to prevent overexertion and detect exercise-induced arrhythmias.
Est. Monthly Cost
$4.08/mo
Est. Yearly Cost
$548.00
(including device)
Eligibility may vary by provider and plan. Check with your HSA/FSA administrator for specific details.
Evidence-based evaluation by medical professionals
"The Frontier X Plus is the ultimate wearable for athletes who need real-time, continuous ECG feedback during extreme physical exertion."
The Fourth Frontier X Plus distinguishes itself from traditional spot-check ECG monitors by providing continuous recording during vigorous exercise. Worn as a chest strap, it captures high-fidelity Lead I ECG data, heart rate, and breathing rate. Its standout feature is the cardiac 'Strain' metric, which provides vibration alerts when the user exceeds personalized safe thresholds, helping to prevent overexertion. The device syncs data to a mobile app and a sophisticated web-based cloud platform for in-depth analysis of rhythm and performance metrics. While it requires the use of a chest strap, the signal quality during high-movement activities is superior to wrist-based sensors, making it a professional-grade tool for endurance monitoring.
Ranked #12 of 13 clinically evaluated personal ecg monitors devices
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Fourth Frontier
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Fourth Frontier
Our #1-ranked personal ecg monitors device demonstrated superior performance across key clinical metrics. Compare detailed specifications to make an evidence-based selection.
Verified retailers and current pricing
FSA/HSA eligible; includes access to the Frontier health portal.
Occasionally available with seasonal discounts.
