Accurate VO₂ max powered by HRV analytics Accurate VO₂ max powered by HRV analytics
Precise Zone 2 training using VT1–VT2 thresholds
Personalised vibration alerts for every zone
IP67 rated, 30 days superior battery life
£199
Inclusive of VAT.
OR
£16/month*
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*14-day money-back guarantee
*14-day money-back guarantee
Use code SUMMER10 to get 10% Off
What our customers say
GJ
Gareth Jenkins
1 reviews
•
NL
Mar 18, 2026
I used the online fourth frontier analysis tool together with my own ramp tests and FTP tests to nail my “easy”, “moderate” and “hard” intensity zones with power, heart rate and breathing. Very powerful- to the extent that pro-cycling teams are doing this now
DI
dip
4 reviews
•
US
Mar 18, 2026
This is an excellent product and provides insightful data on cardiovascular health during exercise. It integrates well with the iPhone and Garmin products. I have been using this for over a year for cycling and running.
DH
Dharmesh
10 reviews
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GB
Mar 18, 2026
Love the HR monitor, using it for running cycling walking mainly for over a year. Used it to work out my FTP and even impressed my GP. Taking back control of my health from the state and industry.
GJ
Gareth Jenkins
1 reviews
•
NL
Mar 18, 2026
I used the online fourth frontier analysis tool together with my own ramp tests and FTP tests to nail my “easy”, “moderate” and “hard” intensity zones with power, heart rate and breathing. Very powerful- to the extent that pro-cycling teams are doing this now
DI
dip
4 reviews
•
US
Mar 18, 2026
This is an excellent product and provides insightful data on cardiovascular health during exercise. It integrates well with the iPhone and Garmin products. I have been using this for over a year for cycling and running.
DH
Dharmesh
10 reviews
•
GB
Mar 18, 2026
Love the HR monitor, using it for running cycling walking mainly for over a year. Used it to work out my FTP and even impressed my GP. Taking back control of my health from the state and industry.
Certification
Why serious cyclists choose Frontier Zone
Wrist-based HR struggles during intense rides
Direct electrical heart signal measurement from the chest
Reliable signal quality during climbs, sprints, and hard efforts
Precise physiological data for training, recovery, and performance
Instant response to changes in effort
Estimates heart rate using optical sensors on the wrist
Signal quality can be affected by movement and wrist position
Reduced accuracy during hard efforts and intervals
Slower response to rapid changes in intensity
Comparison
Why cyclists upgrade from smartwatches
Features
Other HRM
Smart Watch
Heart rate (BPM) and breathing rate, indicating cardiovascular and respiratory effort.
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Tracks beat to beat heart rate variability to measure recovery and readiness.
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Train using physiological thresholds for optimal endurance and performance.
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Receive instant alerts when you move outside your target training zone.
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Measures cardiovascular strain to help balance effort and recovery.
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Monitor aerobic fitness and recovery patterns over time.
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Track cumulative training stress and impact on the body.
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Capture continuous ECG data throughout your workouts and activities.
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Features
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.
VT1–VT2 based zones
VT zones are training zones defined by ventilatory thresholds, which reflect key shifts in energy production during exercise, rather than estimated heart-rate ranges.
VO₂ Max trends
Track VO₂ Max changes over time to see whether your training is improving aerobic performance.
Zone-Based Alerts
Receive vibration alerts when heart rate moves outside your set zone thresholds.
Strain Monitoring
See how hard the cardiovascular system was working during a session for a clearer view of effort and physiological demand.
Training load
Track cumulative exercise load over time to keep effort, recovery, and progression in balance.
Session metrics
Review pace, distance, duration, and related session data alongside heart-based metrics for a complete view of performance.
Activity Tagging & Notes
Add notes and tags to sessions to better interpret how routine, behaviour, and context affect performance.
ECG + GPS Maps
View ECG data alongside route mapping to interpret cardiac response across changing terrain, pace, and effort.
Readiness score
See how prepared the body is for training on a given day, so intensity better matches current condition.
Sleep stage analysis
Track sleep stages and consistency to better understand recovery quality over time.
Stress monitoring
Track physiological stress over time through HRV and related signals to better understand overall recovery state.
Live ECG streaming and continuous recording
View live ECG during activity and capture continuous recordings for a complete view of cardiac activity over time.
Generate and share ECG reports
Download ECG data in PDF, CSV, or EDF formats and share it with a coach or healthcare professional when needed.
Trusted by professional and elite cyclists worldwide