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Fourth Frontier Technologies LLC develops continuous ECG wearable devices aimed at athletes, fitness enthusiasts, and patients who want detailed, real-time heart monitoring. The company offers both consumer-facing fitness trackers and prescription-based, FDA-cleared cardiac monitoring solutions.

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At a glance

About Fourth Frontier Technologies LLC

Main product category
Continuous ECG wearables
Target audience
Athletes, fitness enthusiasts, cardiac patients, healthcare providers
Key features
24/7 ECG, HRV, VO2 Max, AFib detection, arrhythmia analysis
FDA clearance
Yes, for Frontier X Plus
Battery life (Frontier X3)
Up to 4 months with typical 1 hour per day use
Customer service
USA/Canada: +1 512 881 7266, UK/EEA: +44 203 962 0044, India: +91-8069799671
Integrations
Apple Health, Strava, Garmin
Charging (Frontier X3)
USB-C, full charge in approximately 1 hour
Fourth Frontier operates in the premium segment of wearable health technology, targeting a broad but specific audience that ranges from serious endurance athletes such as runners, cyclists, and triathletes to patients requiring clinical-grade cardiac monitoring at home. The company's approach combines sports performance insights, including VO2 Max, HRV, and training load, with medical-grade ECG capabilities such as AFib detection and arrhythmia analysis. Their product line spans consumer devices like the Frontier X2 and X3, as well as the prescription-based Frontier X Plus and professional Holter monitoring services, positioning them at the intersection of fitness technology and digital health. Support is available across the United States, Canada, the United Kingdom, and India, suggesting a genuinely international reach.
November 2026

Active promotions

Ready to use with your order at Fourth Frontier Technologies LLC.

Seasonal discount of 25% on selected devices, as seen during the Halloween Sale period. Keep an eye on the website for similar time-limited promotional events throughout the year.
To the shop
Bundle offer combining a Frontier heart monitor with accessories such as the HRM Chest Strap or HRM Sports Bra at a reduced combined price.
To the shop
Recent

Fourth Frontier Technologies LLC in the news

Recent updates and background about Fourth Frontier Technologies LLC, summarised in our own words.

Gadgets & Wearables

Fourth Frontier X3 reviewed with focus on battery performance

The Fourth Frontier X3 wearable has been reviewed, with its battery life standing out as the most notable improvement over previous models. The device was assessed by Gadgets and Wearables as part of their coverage of fitness technology.

Gadgets & Wearables

Frontier Zone offers ECG-based training at a lower price point

The Frontier Zone has been reviewed as a more affordable option for athletes seeking ECG-enabled training features. Gadgets and Wearables evaluated the product in the context of budget-conscious fitness wearables.

Gadgets & Wearables

Frontier X3 chest strap introduced with extended four-month battery life

Fourth Frontier has released the Frontier X3, a chest strap designed to be lighter than its predecessors while offering a battery life of approximately four months. The product launch was covered by Gadgets and Wearables.

Summaries by Image Review based on publicly available sources and our own editing. External links may contain affiliate links.

Frequently asked questions

What others ask about Fourth Frontier Technologies LLC

Answers to the most common questions, based on search behaviour and our own research.

Is Fourth Frontier Technologies LLC a reliable webshop?

Fourth Frontier Technologies LLC sells FDA-cleared medical devices alongside consumer fitness wearables and operates internationally across the US, Canada, UK, and India. The company provides multiple customer support channels by phone and email, which suggests an established support structure for buyers.

What payment methods does Fourth Frontier accept?

Based on available information, Fourth Frontier accepts Shop Pay and PayPal in supported countries, including the United States. Additional payment options may be available at checkout depending on your location.

Do I need a prescription to buy a Fourth Frontier device?

The Frontier X2 and Frontier X3 are available as direct consumer purchases without a prescription. The Frontier X Plus is a prescription-based device intended for patients under medical supervision.

Does Fourth Frontier ship internationally?

Fourth Frontier has customer support lines for the US, Canada, the UK, and India, and PayPal checkout is listed as available in a wide range of countries. For specific shipping options to your region, checking out or contacting support directly is recommended.

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