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"Frontier X is by far the most advanced of any wearable technology available today."

Paula Radcliffe
Former Women's Marathon World Record Holder

Measure What Matters

Frontier X is the world's first chest-worn device that instantly and accurately detects novel physiological signals like cardiac strain and breathing rate that have so far only been available in sports medicine labs.


Continuously monitor heart health

Tune into your body's optimal pace

Review and plan weekly training load

Run distraction free

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Monitor Cardiac Strain

"What’s groundbreaking about the Frontier X is that this information has never been obtainable outside a lab. And it resonates massively for me personally, because had I been wearing it five years ago, it could potentially have given me a warning about my building atrial fibrillation, a heart defect that can randomly develop in any one of us."

-Tim Hutchings
Marathon broadcaster and 1984 UK Olympian

Measure True Effort

“I’m a true believer that perceived exertion is the best way to monitor your effort and that paying attention to your breathing, paired with stride cadence, is the most efficient way to judge effort."

- Budd Coates
Author of Running On Air

Press

The new Frontier:
Measure what matters with the breath of fresh air in performance monitoring

The health and fitness trends of 2020?
Here are the movers and shakers.

Revolutionary Wearable Tech Frontier X
debuts At TCS NYC Marathon

Hold your pace.
It's a long race.

Frontier X monitors every breath you take, and alerts you with a buzz when you cross your sustainable effort level.

Work your heart.
Don't wear it down.

Frontier X measures the strain on your heart muscles, and warns you with a double buzz if your heart muscle's needs aren't being met.

Break barriers.
Without breakdowns.

Frontier X measures your true internal load during different sports and helps you reduce your risk of injury and overtraining.

Free your mind.
Train distraction-free.

Frontier X keeps a close watch on you and buzzes you only when you need to be alerted, allowing you to simply enjoy your sport and the atmosphere.

Product Features

Effort estimation based on breathing rate


ECG live-streaming and
recording for up to 24 hrs


Suitable for running, swimming and other endurance sports


Cardiac Strain based on ECG

Accurate Heart Rate measurement


Sweat-proof and waterproof up to 1.5 meters



Real-time vibration alerts when crossing Effort and Cardiac Strain thresholds.


See real time data on smartphones and select smartwatches.

Up to 24hrs of continuous use or 2 weeks of typical use

"For endurance athletes, Frontier X is a game-changer that impacts optimal training load and performance by measuring breathing rate, the most important variable in training. For anyone who exercises, the additional measurement of overall heart health is a potential life changer."

Michael Conlon
Founder of Finish Line Physical Therapy

"Frontier X is the first product to monitor breathing rate and thus gauge intensity using practical and scientifically justified methodology. Frontier X will transform the way athletes and coaches view workouts by allowing for quick detection when an athlete has crossed an intensity threshold that he/she might not yet perceive subjectively."

Jonathan Cane
New York City endurance sports coach

"Heart rate tells only a small part of the story. Real effort depends on breathing rate and cardiac strain, amongst other factors. Frontier X gives me a detailed ECG for every run and helps me keep track of my training load based on real effort."

Yash Muthiyan
Running blogger and regular marathoner

Free Shipping

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

Onboarding Support

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