The ECG obtained from the Frontier X2 resembles the V5 lead position of a 12-Lead ECG. The quality of the ECG has been validated against a GE Holter Monitor.

Please note the Frontier X2 is a health & fitness product, and is not intended to be used for diagnostic or treatment purposes. Please read our detailed disclaimers here.

​The Frontier X uses Bluetooth Low Energy (BLE) Technology/Bluetooth Smart to sync with other devices as a heart rate monitor. These devices include certain models of ​Apple Watches, Garmins, Whoop Straps, Pelotons and more. If your external device is equipped with BLE/Bluetooth Smart technology, the Frontier X2 should easily sync as a heart rate monitor (HRM) with no issues whatsoever. 

The Frontier X2 can simultaneously connect to a maximum of 3 devices - 1 Mobile App & 2 External HRMs.

While the external device will only reflect Heart Rate, the Frontier X2 itself will reflect various metrics such as ECG (live and recorded), Breathing Rate, Strain, Heart Rate, Body Shock, and Training Load once it is connected to the mobile app, post your workout. You can see a more detailed view on the Frontier X web dashboard as well, once you've uploaded data from your device to the cloud.

Please note that the Frontier X2 does not support ANT+

There is currently no direct integration between the Frontier X2 and these fitness apps. However, there are a couple of workarounds.

When the Frontier X2 is connected to your phone/apple watch app and the phone/watch is carried along - it allows you to record GPS data as part of your workouts as well. The Frontier X2 doesn't have a GPS chip of its own, and thus uses the phone's/watch's GPS. You can then download a .FIT file of your workout from the Frontier X2 dashboard and upload it to apps like Strava, Training Peaks, JeFit etc. for further analysis. 

Alternatively, you can connect the Frontier X2 to an external HRM like a Garmin or Polar and then pass the information on to Strava or Training Peaks from your external HRM. The data uploaded onto Strava in this case will include the Heart Rate measured by the Frontier X2.

A fully charged Frontier X2 can last for up to 24 hours when recording data continuously and 14 days if used for an average of 1 hr/day.

Yes. You can record data on the Frontier X2 without connecting the device to the mobile app. The Frontier X2 is equipped with a memory chip, unlike most other devices on the market. This ensures that even if you don't connect it to your phone during your workout, or choose to connect it to an external device like Garmin, there's zero data loss as you can come back home and connect the Frontier X2 to the phone later. Once synced, all metrics recorded on the device will be accessible.

Swimming is one of the most common use cases of the Frontier X2. The Frontier X2 is IP67 rated, which means that it is completely waterproof for up to 1.5 meters (approx. 3 ft).

Yes. The chest-worn design of the Frontier X2 keeps your hands free for sport and is tightly fastened to ensure good data quality during motion.

While Frontier X2 has not gone through the official safety testing for use with pacemakers, we have several users who use the device with pacemakers. None of these users have reported any issues.

The Frontier X Plus™ by Fourth Frontier® is a wearable ambulatory electrocardiogram (EKG or ECG) recorder and display product that consists of a device affixed to the chest strap, a companion mobile application, and a web application for analysis of ECG. It is a novel, self-applied continuous ambulatory ECG solution for arrhythmia detection and management.

The Frontier X Plus system also displays ECG waveform and ECG rhythm analysis; detecting the presence of normal sinus rhythm, atrial fibrillation, bradycardia, tachycardia, inconclusive and unreadable rhythms. The device is intended for use by healthcare professionals to monitor patients with known or suspected heart conditions and health-conscious individuals. It is indicated for use on adult patients who may be asymptomatic or who may suffer from transient symptoms requiring cardiac monitoring. The device is a non-invasive, lightweight, rechargeable battery- operated wireless ambulatory ECG monitor.

Early detection of atrial fibrillation (AFib) is crucial for preventing serious cardiac complications. Timely detection allows for early intervention through medication, lifestyle changes, or medical procedures, improving patient outcomes and preventing long-term health issues. The FDA-cleared Frontier X Plus, a chest strap-based heart monitor,  records and transfers single-channel ECG and provides automated detection of atrial fibrillation and other arrhythmias. Frontier X Plus achieves this with exceptional accuracy, boasting 98.10% sensitivity and 97.88% specificity for AFib detection.

The Frontier X Plus improves patient compliance by offering a lightweight, wearable chest monitor that is comfortable and easy to use. Its real-time data tracking and wireless connectivity provide patients with instant feedback, making them more engaged in their health management. The wearable ECG solution is designed for comfort, encouraging consistent use. Patients can self-apply the device and integrate it effortlessly into their daily routines without disrupting their activities.

The Frontier X Plus  should not be used by individuals under the age of 22 years, pregnant women, or patients with potentially life-threatening arrhythmias requiring hospitalization or real-time/in-patient monitoring. Additionally, it is not suitable for individuals with known skin allergies to the materials listed in the "List of Patient-Contacting Materials."(mentioned in the section 1.4.4 of Frontier X Plus User Manual(PUBFXP001_Rev A0)

No, the device should not be used in combination with external cardiac defibrillators or high-frequency surgical equipment.

Do not use a defibrillator with the Frontier X Plus device, as it may cause damage. Ensure the device is removed from areas where defibrillator electrodes are placed.

No, the Frontier X Plus is not indicated for the detection of cardiac conditions such as ischemia, myocardial infarction, or left ventricular hypertrophy (LVH).

If the app identifies conditions like ventricular flutter, ventricular bigeminy, or ventricular trigeminy as unreadable, consult a physician for further analysis.

No, Frontier X Plus does not guarantee the absence of arrhythmias or other health conditions even if an ECG is labeled as normal. Always consult a physician for any potential health changes.