The World's First
Smart Heart Monitor

The World's First
Smart Heart Monitor

Take control of
your heart health

Adcanced Heart Rate Analysis, HRV & Heart Exertion Measurement at the push of a button.

Heart Rate is only
half the Story

Harness the power of continuous ECG to unlock comprehensive health insights.

Go beyond
heart rate

Leverage real time vibration alerts to stay on track with your training, while keeping your heart safe.
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What are you most focussed on?

What are you most
focussed on?

The Frontier X2 delivers on heart health, endurance enhancement, and proactive preventive care.

Elevate Your Heart Health with Frontier X2

The Frontier X2 provides tailored recommendations based on your physiological data.

  • Continuous ECG records the heart's electrical activity

  • Strain Measurement tracks how hard you’re exerting your heart

  • Live-Stream ECG from anywhere across the globe

  • ECG report in PDF format anytime, anywhere

Unparalleled insight, meets deep accuracy.

The Frontier X2 isn’t just a heart rate monitor. It arms you with insights that fuel your passion and drive your endurance.

  • Use Zone Based Training to optimise your fitness

  • Training Load & Body Shock track your training volume and intensity across activities

  • HRV & Stress Measurement enhance your recovery both physically and mentally

Family history of heart disease?

Go on the proactive. Harness the power of continuous ECG to ensure you’re on top of your heart health.

  • HRV tracking helps to identify early warning signs of impending heart issues

  • Real Time Vibration Alerts leverage haptic feedback to notify you when you’re at risk

  • Science backed metrics deliver tailored, personalised insights

A holistic approach to heart health

While smartwatches take snapshots of your heart, the Frontier X2 monitors it around-the-clock.

  • Heart Rate records the number of heartbeats per minute

  • Strain Measurement translates to potential oxygen deprivation and heart muscle concerns

  • Stress measurement tracks your stress levels, signalling when to unwind

Go Beyond Heart Rate Monitors & Smartwatches

The Frontier X2 uses revolutionary ECG technology to track every aspect of your heart.

Strengthen & protect your heart

Monitor your heart rate and ECG continuously while you're on the move to get deeper meaningful insight into your heart health.

Get clarity on whether your lifestyle is actually helping improve your heart health.

Train hard, train safe

Get real-time feedback on your heart health when you are pushing yourself the hardest, so you can avoid overstraining your heart.

Confidently pursue the activities and lifestyle you love, without fear or uncertainty.

The Most Accurate VO₂ Max Tracking Outside a Lab

Get insights into heart health, optimize performance, enhance recovery, flexible subscription plans, and enjoy a 7-day free trial.

Fits Right Into Your Ecosystem

Share continuous ECG data in real-time with your loved ones

Monitor your heart rate and ECG continuously while you're on the move to get deeper meaningful insight into your heart health.

Train in the zone that’s right for you

Get real time feedback so you can avoid overstraining your heart.

"The Frontier X2 has just given me an incredible level of clarity and detail about my 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."

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Why we measure from your chest - not your wrist or fingers

ECG watches and handheld devices can only capture your ECG when you are still for 30 seconds.

The Frontier X2 captures high-quality continuous ECG on your chest while you are exercising, sleeping or at rest.

Get Frontier X2

Advanced Heart Monitoring for Proactive Wellness

Frontier X2 offers real-time heart monitoring, providing insights into heart health and essential metrics. It's designed to help you proactively manage your cardiovascular health and address potential risks.

Frontier X2 offers real-time heart monitoring, providing insights into heart health and essential metrics.

Brought to you by:

The Best Way to Monitor Your Heart

Science Backed Metrics

Get accurate reliable data trusted by experts to guide your progress.

Review and share detailed workout data

See your entire ECG and correlate it with your breathing rate, heart rate, strain and activity.

AI-Enabled Algorithms

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

Gain insights and get help from experts to guide your progress

Get Help from our Experts
Our experts are available to help you understand your data and provide guidance.


Get Insights to Improve your Heart Health
Unique AI generated insights for each workout show you how you did and what you can do better.

Accurately record continuous ECG for up to 24hrs during any activity (including sleep).

Spot changes in your heart rhythm with AI generated Rhythm markers.

Avoid overstraining your heart by combining your HR with Strain.

Train in the right zone without distractions with real-time, personalized, and discreet vibration alerts.

Add health event tags to help you understand how lifestyle choices and behaviour affect your heart health.

Accurately assess your true effort with our proprietary Breathing Rate algorithm.

Get Frontier X2

Share your ECG & other metrics instantly and securely with anyone across the world.

Simultaneously connect to upto 2 external HRM devices that use Bluetooth Low Energy/Bluetooth Smart.

AI enabled algorithms - Receive post-activity training insights, recommendations, and weekly goals.

Frontier X2 Certification

Frontier X2 is manufactured in accordance with the highest international standards. Frontier X2 comes with 10+ device certifications along with the IP67 rating - waterproof and sweatproof up to 1.5 meters.

Spotlight Stories

Inspiring heart health journeys shared by our community members.

Accurately record continuous EKG for up to 24hrs during any activity (including sleep).

Spot changes in your heart rhythm with AI generated Rhythm markers.

Train in the right zone without distractions with real-time, personalized, and discreet vibration alerts.

Add health event tags to help you understand how lifestyle choices and behaviour affect your heart health.

Accurately assess your true effort with our proprietary Breathing Rate algorithm.

Share your EKG & other metrics instantly and securely with anyone across the world.

Simultaneously connect to upto 2 external HRM devices that use Bluetooth Low Energy/Bluetooth Smart.

AI enabled algorithms - Receive post-activity training insights, recommendations, and weekly goals.

Avoid overstraining your heart by combining your HR with Strain.

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150,350,569

Minutes of data recorded worldwide

Fourth Frontier is now FDA 510(k) cleared.