Former Women's Marathon World Record Holder
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"Frontier X is by far the most advanced of any wearable technology available today."
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."
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
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.
Frontier X measures your true internal load during different sports and helps you reduce your risk of injury and overtraining.
Free your mind.
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.
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."
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."
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."
Running blogger and regular marathoner
Free Shipping anywhere across the United States, United Kingdom, Europe and India.
We're here to help you get the most out of your Frontier X. Email us 24/7 with your questions.