WORLD'S FIRST SMART HEART MONITOR
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24/7 Continuous ECG during 20+ activities
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Accurate VO₂ max powered by HRV analytics
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Precise Zone 2 training using VT1–VT2 thresholds
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Personalised vibration alerts for every zone
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Realtime heart health feedback during exercise
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Lightweight. Sweat & water-resistant (IP67)
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USB-C rechargeable with up to 30 days of battery life
£199
Real Stories That Inspire Us
TRUSTED BY 30K USERS IN 50+ COUNTRIES
Gold Standard Heart Rate
Chest-based ECG captures a more reliable signal during intervals, sweat, and high movement, so heart-rate accuracy remains stable as intensity rises.
Advanced HRV Insights
Track HRV trends at ±1ms precision to better understand fatigue, readiness, and adaptation across training blocks.
Track 20+ Activities
Capture continuous heart and performance data across running, cycling, rowing, hiking, and more.
The Science Of Precision
Wrist-based PPG sensors can lose signal quality during motion and intensity. While Chest-based ECG measures your heart signals directly delivering gold standard heart-rate accuracy even during higher-intensity effort, resulting in:
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Precise Zone 2 tracking guided by VT1–VT2 thresholds
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Highly reliable VO₂ max insights powered by advanced HRV (±1 ms precision)
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Deeper insights into readiness and recovery for better training outcomes
Frontier ECG
Smartwatch PPG
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One device, multiple disciplines
Built to track performance data across 20+ activities, from running and cycling to swimming and strength, with heart-rate accuracy that remains reliable even in sweat and motion.
Track effort, pacing, and training load across longer sessions, so performance stays measured and controlled.
Maintain a clear view of effort through intervals, tempo sessions, and longer runs, with heart-rate data that stays accurate under movement.
See the true demands of circuits, rowing, HIIT, and mixed training, with data that helps you judge effort more accurately.
Personalised Zone 2 Training
Precise Zone 2 training derived from VT1 - VT2 zones identified through advanced heart rate and HRV analysis, with alerts to help you stay within your target zone.
How It Works
Wear it without distractioin
A comfortable chest -worn ECG device built to capture continuous, high-quality data across 20 + activities.
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Technical Specification
In The Box
Frontier Zone
1x Elastic Chest Strap
Quick Start Guide
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USB Cable
Spotlight Stories
Trusted by those who set the standard
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Try it 14 days, risk free
Frontier Zone comes with a 14 day money back guarantee
Frequently Asked Questions (FAQs)
How does the Frontier Zone help keep your heart safe?
The Frontier Zone measures changes in your ECG that may indicate oxygen deprivation or stress on the heart muscle, translating this into real-time Strain values in the app. It also provides vibration alerts when you cross preset thresholds, as well as zone-specific heart rate alerts, so you can stay within your target intensity. For example, if you set Zone 2, you’ll be alerted when you go above or below its limits. These alerts help you adjust your effort in real time, whether that means pushing forward or easing off, to stay within a safer and more effective training range.
How accurate is the ECG measured by the Frontier Zone?
The ECG obtained from the Frontier Zone resembles the V5 lead position of a 12-lead ECG. Please note that the Frontier Zone is a health and fitness product and is not intended for diagnostic or treatment purposes.
How does the Frontier Zone compare with other ECG devices on the market?
Most ECG devices on the market are either watches or hand-held devices. Hand-held and watch-based ECGs require you to sit still and hold the device with both hands, making them unsuitable for use during exercise. They also tend to have lower data quality, as ECG is captured from the finger or wrist rather than the chest. Additionally, these devices typically record only short 30 to 60 second ECG segments and do not support long continuous recordings. Frontier Zone delivers up to 24 hours of continuous ECG during activity, using a chest-worn design to ensure stable, high-quality data and more accurate readings than wrist or finger-based devices.
Can I use the Frontier Zone without being connected to my phone?
Yes. The Frontier Zone includes onboard memory, allowing it to record data even without a live connection to your phone. You can sync the device later, and all recorded data will be available in the app without any loss.
How accurate is the ECG measured by the Frontier X2?
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.
What is the difference between Frontier X2 and Frontier Zone?
Frontier Zone is the newer version of Frontier X2, built with updated hardware while offering the same core features at a more affordable price. The key differences are in the device design and usability. Frontier Zone offers up to 30 days of battery life with typical usage, comes with USB-C charging, and has a simpler hardware design with no screen on the device. In short, Frontier Zone gives you the same powerful Frontier X2 experience with improved hardware, longer battery life, USB-C charging, and a more accessible price.
Is the Frontier Zone compatible with other external Heart Rate Monitors?
The Frontier Zone uses BLE technology to sync with other devices as a heart rate monitor. These include certain models of Apple Watch, Garmin, Whoop, Peloton, and more. If your external device supports BLE or BLE Smart, it should sync seamlessly with the Frontier Zone. The Frontier Zone can connect to up to three devices simultaneously: one mobile app and two external HRMs. While external devices will only display heart rate, the Frontier X app provides access to detailed metrics such as ECG (live and recorded), Breathing Rate, Strain, Body Shock, and Training Load after syncing. Please note that the Frontier Zone does not support ANT+.
What is the battery life of the Frontier Zone?
A fully charged Frontier Zone can last for up to 7 days when recording data continuously and 14 days if used for an average of 1 hr/day.
Can I use the Frontier X2 without it being connected to my phone?
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.
How does the Frontier Zone help improve your performance?
The Frontier Zone helps improve your performance by providing highly accurate VO₂ max estimates derived through advanced HRV analysis (±1 ms precision), along with key metrics like Training Load, Body Shock, and Readiness Score. With zone-based alerts and real-time notifications for Heart Rate, Breathing Rate, and Strain, it helps you stay within your target intensity, avoid overexertion, and train safely. These insights give you a deeper understanding of your effort, recovery, and overall fitness, helping you train with greater precision and continuously improve performance.
Can you use the Frontier Zone with a pacemaker?
The Frontier Zone has not undergone formal testing for use with pacemakers. It is recommended to consult a healthcare professional before use.
Is the Frontier Zone a medical device?
The Frontier Zone is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. It is designed for general wellness purposes only and provides fitness and performance insights. Any health-related information provided by the device is for informational purposes only and should not be considered medical advice. Please consult a qualified healthcare professional before making any changes to your health or fitness regimen.