Train With ECG-
Powered Accuracy.

Built For Cyclists.

Frontier Zone combines continuous ECG, advanced recovery insights, and real-time zone alerts to help cyclists train smarter.

Why ECG grade HR matters for serious cyclists

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Upgrade to World's First Smart Heart Monitor

Our Lowest Price Ever

  • 24/7 Continuous ECG during 20+ activities
  • Syncs with Apple Health, Garmin & more via BLE Syncs with Apple Health, Garmin & more via bluetooth 5.0
  • Lightweight. Sweat & water-resistant. (IP67)
  • Superior battery life for 14 days on typical usage
£199
Inclusive of VAT.
OR
£28 /month*
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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   •   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.

Why serious cyclists choose Frontier Zone

Wrist-based HR struggles during real rides

Sweat, vibration, movement, climbs, and intervals can reduce wrist-based accuracy precisely when reliable data matters most.

ECG
  • 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
PPG
  • 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

Measure what others can only estimate

Features Other HRM Smart Watch

The number of heartbeats per minute (BPM), indicating the intensity of cardiovascular effort.

Evaluates autonomic nervous system health

Total physiological work based on time spent in various breathing rate zones.

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Training at a defined aerobic intensity that maximizes endurance gains with minimal fatigue.

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Measure how efficiently your body uses oxygen during exercise

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Measures stress on joints and musculoskeletal system

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Measures cardiovascular strain during any activity.

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Get discreet real-time vibration alerts to keep you in the optimal zone.

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Comparison Table Mobile

Trusted by Elite Marathon Runners and Olympic Athletes

Paula Radcliffe
(Former Women’s World Marathon Record Holder for 16 Years)
Mark Allen
(Six-Time Ironman World Champion)
Stephen Scullion
(Irish Olympic Athlete)