India UK & Europe

RECORD & ANALYZE YOUR ECG
ANYTIME, ANYWHERE.

RECORD & ANALYZE YOUR ECG
ANYTIME, ANYWHERE.

RECORD & ANALYZE YOUR ECG
ANYTIME, ANYWHERE.

World’s first and only chest-worn Smart Heart Monitor that provides high quality continuous ECG & real-time feedback on your heart health.

Frontier X continuously monitors your cardiac and respiratory health and provides real-time feedback with on-board vibration alerts as well as a way for your health team to access ECG, vitals and activity metrics remotely.

RECORD & ANALYZE YOUR ECG
ANYTIME, ANYWHERE.

OUR MISSION AT FOURTH FRONTIER

OUR MISSION AT FOURTH FRONTIER

Fourth Frontier is a pioneering health tech company that is looking to help individuals with cardiac concerns, exercise safely and improve their cardiac performance. We build and offer products and services for monitoring and improving heart health.

We have a user base of several thousand users across the world, ranging from recreational runners returning to exercise after a cardiac event to elite cyclists exercising with ventricular tachycardia. We have built a community to help connect like-minded people to each other and experts like sports cardiologists, so as to best understand how to modify their lifestyle and exercise and when to seek expert help.

“The first run I had with the device showed me how comfortable, simple, and easy to use it (the Frontier X) was, but more importantly, it gave me reassurance after years of pushing my body and my heart to its limit, that I hadn’t caused any lasting damage.”

PAULA RADCLIFFE

Former Women's Marathon World Record Holder

“The first run I had with the device showed me how comfortable, simple, and easy to use it (the Frontier X) was, but more importantly, it gave me reassurance after years of pushing my body and my heart to its limit, that I hadn’t caused any lasting damage.”

PAULA RADCLIFFE

Former Women's Marathon World Record Holder

EXERCISE SAFELY WITHOUT OVERSTRAINING YOUR HEART

ASSESS YOUR HEART FOR ABNORMAL RHYTHMS
Record a high-quality continuous ECG*, during any activity, for up to 24 hours and give yourself a better chance of spotting abnormal heart rhythms.
*Validated against a GE Holter Monitor to provide accurate results.

ASSESS YOUR HEART FOR ABNORMAL RHYTHMS

Record high-quality continuous ECG*, during any activity, for up to 24 hours and give yourself a better chance of spotting abnormal heart rhythms.

ASSESS YOUR HEART FOR ABNORMAL RHYTHMS
Record a high-quality continuous ECG*, during any activity, for up to 24 hours and give yourself a better chance of spotting abnormal heart rhythms.
*Validated against a GE Holter Monitor to provide accurate results.

MEASURE THE STRAIN ON YOUR HEART

Based on the principle of a Treadmill Stress Test, Cardiac Strain measures the amount of Oxygen deprivation experienced by the heart muscles.

EXERCISE SAFELY WITHOUT OVERSTRAINING YOUR HEART

ASSESS YOUR HEART FOR ABNORMAL RHYTHMS

Record high-quality continuous ECG*, during any activity, for up to 24 hours and give yourself a better chance of spotting abnormal heart rhythms.

*Validated against a GE Holter Monitor to provide accurate results.

MEASURE THE STRAIN ON YOUR HEART

Based on the principle of a Treadmill Stress Test, Cardiac Strain measures the amount of Oxygen deprivation experienced by the heart muscles.

EXERCISE SAFELY WITHOUT OVERSTRAINING YOUR HEART

ASSESS YOUR HEART FOR ABNORMAL RHYTHMS
Record high-quality continuous ECG*, during any activity, for up to 24 hours and give yourself a better chance of spotting abnormal heart rhythms.
*Validated against a GE Holter Monitor to provide accurate results.

MEASURE THE STRAIN ON YOUR HEART

Based on the principle of a Treadmill Stress Test, Cardiac Strain measures the amount of Oxygen deprivation experienced by the heart muscles.

EXERCISE SAFELY WITHOUT OVERSTRAINING YOUR HEART

ASSESS YOUR HEART FOR ABNORMAL RHYTHMS
Record high-quality continuous ECG*, during any activity, for up to 24 hours and give yourself a better chance of spotting abnormal heart rhythms.
*Validated against a GE Holter Monitor to provide accurate results.

MEASURE THE STRAIN ON YOUR HEART
Based on the principle of a Treadmill Stress Test, Cardiac Strain measures the amount of Oxygen deprivation experienced by the heart muscles.

USED BY LEADING CARDIAC EXPERTS

USED BY LEADING CARDIAC EXPERTS

“This would have been the sole information had we used a regular heart rate monitor (pointing at a heart rate tachogram)...but the Frontier X gives us more information by recording ECG continuously during exercise."

DR. FABRICIO BRAGA

Sports Cardiologist, Chief Medical Officer at Brazilian Triathlon Confederation

“Without the Frontier X we might never have known. We might not have known that I had an ectopic problem. I would have probably increased my exercise; (i.e) done more faster and longer and this could have put me at real risk for the ectopics getting out of control.”

DR. FABRICIO BRAGA

Sports Cardiologist, Chief Medical Officer at Brazilian Triathlon Confederation

“Thankfully we went through the pandemic with this help (the Frontier X) and were able to continuously monitor our patients.”



DR. AASHISH CONTRACTOR

Director, Rehab and Sports Medicine at Sir H.N Reliance Foundation Hospital

“Without the Frontier X we might never have known. We might not have known that I had an ectopic problem. I would have probably increased my exercise; (i.e) done more faster and longer and this could have put me at real risk for the ectopics getting out of control.”

DR. AASHISH CONTRACTOR

Director, Rehab and Sports Medicine at Sir H.N Reliance Foundation Hospital

“This would have been the sole information had we used a regular heart rate monitor (pointing at a heart rate tachogram)...but the Frontier X gives us more information by recording ECG continuously."

DR. FABRICIO BRAGA

Sports Cardiologist, Chief Medical Officer at Brazilian Triathlon Confederation

“This would have been the sole information had we used a regular heart rate monitor (pointing at a heart rate tachogram)...but the Frontier X gives us more information by recording ECG continuously."

DR. FABRICIO BRAGA

Sports Cardiologist, Chief Medical Officer at Brazilian Triathlon Confederation

“Thankfully we went through the pandemic with this help (the Frontier X) and were able to continuously monitor our patients.”

DR. AASHISH CONTRACTOR

Director, Rehab and Sports Medicine at Sir H.N Reliance Foundation Hospital

“Thankfully we went through the pandemic with this help (the Frontier X) and were able to continuously monitor our patients.”

DR. AASHISH CONTRACTOR

Director, Rehab and Sports Medicine at Sir H.N Reliance Foundation Hospital

World’s first WEARABLE that
accurately detects physiological METRICS, so far available only in hospitals and labs

  World’s first WEARABLE that  
accurately detects physiological METRICS, so far available only in hospitals and labs

World’s first WEARABLE that
accurately detects physiological METRICS, so far available only in hospitals and labs

*Questionable Quality

Science Backed Metrics

Use science backed metrics and accurate reliable data trusted by experts to guide your progress.

AI-Enabled Algorithms

Continuously evolving advanced algorithms and software that bring together the best of cardiac science and technology.

Review Detailed Workout Data

See your entire ECG and correlate it with your breathing rate, heart rate, cardiac strain and activity on a web dashboard.

  World’s first WEARABLE that  
accurately detects physiological METRICS, so far available only in hospitals and labs

  World’s first WEARABLE that  
accurately detects physiological METRICS, so far available only in hospitals and labs

World’s first WEARABLE that accurately detects physiological METRICS, so far available only in hospitals and labs

*Questionable Quality

FRONTIER X RESEARCH APPLICATIONS

Cardiac Rehabilitation

  • Remotely monitor ECG, Heart Rate, Breathing Rate, ST-segment changes and Activity in real-time.
  • Centralised Multi-user Monitoring Dashboard.
  • Activity History to monitor compliance.
  • Set Vibration Alerts according to exercise prescription.
  • Assess fitness remotely by monitoring 6 Minute Walk Test or Step Test.
  • Enhanced Patient Comfort with lightweight wireless device.
  • Continuous Recording for over 24 hours
  • AI-powered Arrhythmia Detection for rapid analysis of long recordings.
  • Rate Control and Arrhythmia Burden detection.
  • Monitor response to Anti-arrhythmic Drugs and QTc Prolongation.
Prolonged Ambulatory ECG Monitoring, Arrhythmia Detection & Atrial Fibrillation
Remote Monitoring & Tele-consultations during Covid-19
  • Remotely monitor ECG, Heart Rate, Breathing Rate, ST-segment changes and Activity in real-time.
  • Centralised Multi-user Monitoring Dashboard.
  • Contactless Monitoring for step-down facilities.
  • Set Vibration Alerts according to exercise prescription.
  • Easy to Disinfect.

*The above mentioned features & applications are for research purposes only. The Frontier X is not a medical device and not meant for diagnostic and therapeutic purposes.

FRONTIER X RESEARCH APPLICATIONS

Cardiac Rehabilitation*
  • Remotely monitor ECG, Heart Rate, Breathing Rate, ST-segment changes and Activity in real-time.
  • Centralised Multi-user Monitoring Dashboard.
  • Activity History to monitor compliance.
  • Set Vibration Alerts according to exercise prescription.
  • Assess fitness remotely by monitoring 6 Minute Walk Test or Step Test.
Prolonged Ambulatory ECG Monitoring, Arrhythmia Detection & Atrial Fibrillation*
  • Enhanced Patient Comfort with lightweight wireless device.
  • Continuous Recording for over 24 hours
  • AI-powered Arrhythmia Detection for rapid analysis of long recordings.
  • Rate Control and Arrhythmia Burden detection.
  • Monitor response to Anti-arrhythmic Drugs and QTc Prolongation.
Remote Monitoring &
Tele-consultations during Covid-19*
  • Remotely monitor ECG, Heart Rate, Breathing Rate, ST-segment changes and Activity in real-time.
  • Centralised Multi-user Monitoring Dashboard.
  • Contactless Monitoring for step-down facilities.
  • Set Vibration Alerts according to exercise prescription.
  • Easy to Disinfect.

*The above mentioned features & applications are for research purposes only. The Frontier X is not a medical device and not meant for diagnostic and therapeutic purposes.

FRONTIER X FEATURES

Live Stream ECG.
Instantly.

With a comfortable, easy to wear chest strap, remotely live stream ECG to any web browser or mobile device across the world.


Automated analysis.*
Rhythm, ST changes & more.

Analyse long recordings easily with AI powered detection of arrhythmias, analysis of ST- segment changes and visualisation of conduction intervals.


Don't miss early signs.
Real-time vibration alerts.

Get vibration alerts when heart rate, breathing rate, or cardiac strain go above or below a preset threshold.


Context is everything.
Event markers and activity tags.

Understand relationships between activity, symptoms, medication and Frontier X metrics.


Understand Exercise.
Improve Outcomes.

Objective data on compliance to ambulation, rehabilitation or lifestyle modification.

*The above mentioned features & applications are for research purposes only. The Frontier X is not a medical device and not meant for diagnostic and therapeutic purposes.

FRONTIER X FEATURES

Live Stream ECG.
Instantly.

With a comfortable, easy to wear chest strap, remotely live stream ECG to any web browser or mobile device across the world.


Automated analysis.*
Rhythm, ST changes & more.

Analyse long recordings easily with AI powered detection of arrhythmias, analysis of ST- segment changes and visualisation of conduction intervals.


Don't miss early signs.
Real-time vibration alerts.

Get vibration alerts when heart rate, breathing rate, or cardiac strain go above or below a preset threshold.


Context is everything.
Event markers and activity tags.

Understand relationships between activity, symptoms, medication and Frontier X metrics.


Understand Exercise.
Improve Outcomes.

Objective data on compliance to ambulation, rehabilitation or lifestyle modification.

*The above mentioned features & applications are for research purposes only. The Frontier X is not a medical device and not meant for diagnostic and therapeutic purposes.

USE THE FRONTIER X FOR RESEARCH

The Frontier X is used globally by leading researchers to monitor the heart during exercise. Get in touch with us to learn more about our research applications.

JOIN OUR REFERRAL NETWORK

The Frontier X is used globally by leading researchers to monitor the heart during exercise. Get in touch with us to learn more about our research applications.

IMPACTING LIVES OF USERS EXERCISING WITH CARDIAC CONCERNS

IMPACTING THE LIVES OF USERS WITH CARDIAC CONCERNS

“The Frontier X has just given me an incredible level of clarity and detail about me heart during prolonged endurance events and you just can't get that kind of detail with other devices. It helps me dispel fear and uncertainty."

HOWARD DYSON

Frontier X User, Long-distance cyclist

“The Frontier X has just given me an incredible level of clarity and detail about me heart during prolonged endurance events and you just can't get that kind of detail with other devices. It helps me dispel fear and uncertainty."

HOWARD DYSON

Frontier X User, Long-distance cyclist

“Without the Frontier X we might never have known. We might not have known that I had an ectopic problem. I would have probably increased my exercise; (i.e) done more faster and longer and this could have put me at real risk for the ectopics getting out of control.”

TOM GASKELL

Frontier X User, Wind-surfer

“Without the Frontier X we might never have known. We might not have known that I had an ectopic problem. I would have probably increased my exercise; (i.e) done more faster and longer and this could have put me at real risk for the ectopics getting out of control.”

TOM GASKELL

Frontier X User, Wind-surfer

“The Frontier X has just given me an incredible level of clarity and detail about me heart during prolonged endurance events and you just can't get that kind of detail with other devices. It helps me dispel fear and uncertainty."

HOWARD DYSON

Frontier X User

“Without the Frontier X we might never have known. We might not have known that I had an ectopic problem. I would have probably increased my exercise; (i.e) done more faster and longer and this could have put me at real risk for the ectopics getting out of control.”

HOWARD DYSON

Frontier X User

“Without the Frontier X we might never have known. We might not have known that I had an ectopic problem. I would have probably increased my exercise; (i.e) done more faster and longer and this could have put me at real risk for the ectopics getting out of control.”

TOM GASKELL

Frontier X User

“Without the Frontier X we might never have known. We might not have known that I had an ectopic problem. I would have probably increased my exercise; (i.e) done more faster and longer and this could have put me at real risk for the ectopics getting out of control.”

TOM GASKELL

Frontier X User

IMPROVE WORKOUT PERFORMANCE
WITH PHYSIOLOGICAL METRICS

Measure Accurate Heart Rate

Get the most accurate chest based Heart Rate for effective training.

Measure Accurate Heart Rate

Get the most accurate chest based heart rate recording for effective training.

Measure True Effort with Breathing Rate

Use Breathing Rate to measure internal effort to help you train better, perfect your pace during races and beat your personal best.

Measure True Effort with Breathing Rate

Use Breathing rate for perfect pacing to improve race performance and beat your PRs faster.

Get the Most Out of Each Workout

Use Training Load to objectively measure workload regardless of sport or environment, to prevent over-training and injury, or under-training and deconditioning.

Get the Most Out of Each Workout

Use Training load to objectively measure workload regardless of sport or environment, to consistently improve performance.

Workout Without Distraction

Get discreet real-time vibration alerts when crossing Cardiac Strain and Effort thresholds, helping you tune into your body and avoid having to look at your wrist.

Workout Without Distraction

Get Real-time vibration alerts when crossing Cardiac Strain and Effort thresholds, and tune into your body.

not just numbers. gET peace of mind.

Avoid Over-Straining your Heart

Monitor Cardiac Strain and get real-time vibration alerts, and push your heart with confidence.

Perfect your Pace

Use Breathing Rate to measure internal effort to help you train better and perfect your pace.

Monitor ECG Remotely*

Use live ECG to check your heart health right away, or share it with an expert, while exercising.

Strengthen your Heart

Push your heart in a controlled fashion by monitoring ECG response to exercise.

Measure Workload Objectively

Use Training Load to objectively measure workload regardless of sport or environment.

Prevent Injury

Measure the shock your body suffers during each foot-strike to reduce injury and run longer.

not just numbers, gET peace of mind

Avoid Over-Straining your Heart

Monitor Cardiac Strain and get real-time vibration alerts, so you can push your heart with confidence.

Perfect your Pace

Use Breathing Rate to measure internal effort to help you train better and perfect your pace.

Monitor ECG Remotely*

Use live ECG to check your heart health right away, or share it with an expert, while exercising.

Strengthen your Heart

Push your heart in a controlled fashion by monitoring ECG response to exercise.

Measure Workload Objectively

Use Training Load to objectively measure workload regardless of sport or environment.

Prevent Injury

Measure the shock your body suffers during each foot-strike to reduce injury and run longer.

NOT JUST NUMBERS.
Get PEACE OF MIND.

AVOID OVER-STRAINING YOUR HEART

Monitor Cardiac Strain and get real-time vibration alerts, so you can push your heart with confidence.

Measure Accurate Heart Rate

Get the most accurate chest based heart rate recording for effective training.

Measure True Effort with Breathing Rate

Use Breathing rate for perfect pacing to improve race performance and beat your PRs faster.

MONITOR ECG REMOTELY*

Use live ECG to check your heart health right away, or share it with an expert, while exercising.

Get the Most Out of Each Workout

Use Training load to objectively measure workload regardless of sport or environment, to consistently improve performance.

STRENGTHEN YOUR HEART

Push your heart in a controlled fashion by monitoring ECG response to exercise.

MEASURE WORKLOAD OBJECTIVELY

Use Training Load to objectively measure workload regardless of sport or environment.

PREVENT INJURY

Measure the shock your body suffers during each foot-strike to reduce injury and run longer.

Workout Without Distraction

Get Real-time vibration alerts when crossing Cardiac Strain and Effort thresholds, and tune into your body.

PERFECT YOUR PACE

Use Breathing Rate to measure internal effort to help you train better and perfect your pace.

FRONTIER X specifications

.  Apps available for iOS and Android phones.

. Display Heart Rate on compatible BLE sports watches.

. Sweat-proof and Waterproof up to 1.5 metres.

. Battery: Upto 24 hours of continuous use, or 2 weeks of typical use.

. Easy to wear chest belt.

. Lightweight device snaps on to the chest belt with ease.

. Single red button for all key actions.

    • . Easy to connect wirelessly to any smartphone. 

FRONTIER X specifications

. Apps available for iOS and Android phones.

. Display Heart Rate on compatible BLE sports watches.

. Sweat-proof and waterproof up to 1.5 metres.

. Battery: Upto 24 hours of continuous use, or two weeks of typical use.

. Easy to wear chest belt.

. Lightweight device snaps on to the chest belt with ease.

. Single red button for all key actions.

. Easy to connect wirelessly to any smartphone. 

TECHNICAL specifications

. Apps available for iOS, Apple Watch and Android phones.

. Display Heart Rate on compatible BLE sports watches.

. Sweat-proof and Waterproof up to 1.5 metres.

. Battery: Upto 24 hours of continuous use.

. Easy to wear chest belt.

. Lightweight device snaps on to the chest belt with ease.

. Single red button for all key actions.

. Easy to connect wirelessly to any smartphone.

 

30 DAY RISK FREE TRIAL

An unbeatable guarantee: Try the Frontier X for 30 days, 100% risk-free.

FREE SHIPPING

Free Shipping anywhere across the United States, United Kingdom, and India.

PRODUCT SUPPORT

We're here to help you get the most out of your Frontier X. Email us 24/7 with your questions.

1 YEAR LIMITED WARRANTY

Your unit is protected by a limited warranty for one year from the original date of purchase.

Free Shipping

Free Shipping anywhere across the United States, United Kingdom, and India.

Product Support

We're here to help you get the most out of your Frontier X. Email us 24/7 with your questions.

1 Year Limited Warranty

Your unit is protected by a limited warranty for one year from the original date of purchase.

30 Day Risk Free Trial

An unbeatable guarantee: Try the Frontier X for 30 days, 100% risk-free.

USE THE FRONTIER X FOR RESEARCH

The Frontier X is used globally by leading researchers to monitor the heart during exercise. Get in touch with us to learn more about our research applications.

USE THE FRONTIER X FOR RESEARCH

JOIN OUR REFERRAL NETWORK

The Frontier X is used globally by leading researchers to monitor the heart during exercise. Get in touch with us to learn more about our research applications.