HRM Sports Bra (Copy)

HRM Sports Bra (Copy) Black
HRM Sports Bra (Copy)
HRM Sports Bra (Copy)
HRM Sports Bra (Copy)
HRM Sports Bra (Copy)
HRM Sports Bra (Copy)

HRM Sports Bra (Copy)

Continuous Ambulatory ECG & Arrhythmia Analysis

  • Detect AFib Early: 24/7 Continuous ECG with arrhythmia burden analysis.
  • No Adhesives or Wires: Designed for comfortable wear during exercise, rest, and sleep. No Adhesives or Wires: Designed for comfortable wear during exercise, rest, and sleep.
  • View & Share ECG Reports: Instantly access and share reports with your physician.
  • Weekly Rhythm Insights: Track heart rate and arrhythmia burden over time.

Starting from $249

  • 24/7 Continuous ECG during 20+ activities
  • Syncs with Apple Health, Garmin & more via bluetooth 5.0
  • Lightweight. Sweat & water-resistant. (IP67)
  • Superior battery life for 14 days on typical usage
Optional Add On
  • Frontier Premium Subscription: For the most accurate VO2 Max outside a lab, Zone 2 training with VT1, VT2 Zones, Readiness Score, Oxygen Uptake, and Sleep Stage Analysis, Learn More.
  • HRM Sports Bra: Features integrated electrodes for external heart rate monitors like Garmin, Polar H7, Frontier X2, and more. Moisture-wicking, high-performance fabric, and standard snap compatibility (45mm distance between snaps), Learn More.
  • Travel Case: A durable, travel-friendly hard case designed to protect your Frontier device with custom-fit compartments for the device, cable, and chest strap, Learn More.
Free Add On

With Frontier X2, you’ll receive:

  • 1 Free consultation with our expert
  • Lifetime customer support
  • 1-year warranty for added peace of mind
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As Low As $38
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14 Day Risk Free

14 Day Risk-
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Across The USA

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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.

*Frontier Premium includes a 7-day risk-free trial with a money-back guarantee if you're not satisfied by the end of the trial period.

Measure the
Metrics that Matter

Frontier X Plus Compliance

*Disclaimer: RoHS2 & Reach Compliant chest strap.

Choose your subscription

Essential Monitoring

Guided Monitoring

$49/month
Monthly Plan (6-month lock-in)
  • Frontier X Plus Device
  • Weekly Cardiac Rhythm Reports
  • Lifetime customer support
  • 14-day free trial 
  • Live ECG streaming
$249
Buy Now Learn More
best value - save 32%
$33/month
Annual Plan
  • Frontier X Plus Device
  • Weekly Cardiac Rhythm Reports
  • Lifetime customer support
  • 14-day free trial 
  • Live ECG streaming
$588 $399
Buy Now Learn More
$99/month
Monthly Plan (6-month lock-in)
  • 1:1 consultation with cardiac coaches once a month 
  • Frontier X Plus Device
  • Weekly Cardiac Rhythm Reports
  • Lifetime customer support
  • 14-day free trial 
  • Live ECG streaming
$549
Buy Now Learn More
recommended - save 33%
$66/month
Annual Plan
  • 1:1 consultation with cardiac coaches once a month 
  • Frontier X Plus Device
  • Weekly Cardiac Rhythm Reports
  • Lifetime customer support
  • 14-day free trial 
  • Live ECG streaming
$1188 $799
Buy Now Learn More
WHO IS IT FOR?

When symptoms don't show up at the clinic

Beyond traditional cardiac monitoring devices

Features Holter Monitors ECG Patches

Monitor your heart health with a high-quality Continuous ECG 24/7 in real-time.

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Captures heart health data with live ECG while you train.

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Measures stress on joints and musculoskeletal system

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Measure how efficiently your body uses oxygen during exercise

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Measures when your body shifts from aerobic to anaerobic exercise

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Easily generate, download, and share your ECG reports.

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Live-streaming of continuous ECG & view real-time heart health metrics.

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

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Measures cardiovascular strain during any activity.

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Comparison Table Mobile
HOW IT WORKS

From enrollment to weekly rhythm insights

Everything you need to get started with continuous heart rhythm monitoring from home.
1

Choose your plan

Select a subscription plan that fits your needs.

2

Complete your prescription

Select a subscription plan that fits your needs.

3

Start monitoring

Select a subscription plan that fits your needs.

4

Get weekly rhythm insights

Select a subscription plan that fits your needs.

What sets Frontier X Plus apart

Detect atrial fibrillation earlier

Continuous ECG for early detection of heart rhythm irregularities.

98.1% sensitivity. 97.88% specificity.

Validated against a 12 lead ECG for clinically reliable heart rhythm detection.

ECG Monitoring during movement

Record ECG while walking, exercising, or going through your routine.

Doctor-ready reports

Get structured cardiac reports that can support conversations with your care team.

Comfortable all-day wear

Wire-free, chest-worn design made for longer monitoring periods.

Rechargeable and reusable

Designed for ongoing monitoring without repeated disposable patches.

Technical Specifications

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What’s in the box

Frontier X Plus device

Frontier X Plus device

2x elastic chest strap

2x elastic chest strap

Quick start guide

Quick start guide

Adapter

Adapter

USB cable

USB cable

Try it for 14 days, risk free

Frontier X2 comes with a 14-day money back guarantee and 1-year warranty.

Frequently Asked Questions (FAQs)

What makes the Frontier X2 so much more advanced than a regular Heart Rate Monitor?

The Frontier X2 is the World’s First Smart Heart Monitor that allows you to record your ECG during exercise.

Unlike a regular heart rate monitor, which typically only transmits heart rate, the Frontier X2 records, stores, and processes your ECG (during both exercise and rest), Heart Rate, Strain, Breathing Rate, as well as biomechanical parameters like Cadence (step rate) and Body Shock.

The Frontier X2 can also give you real-time feedback through vibration alerts, when you cross preset thresholds for Heart Rate, Breathing Rate and Strain. Moreover, you can transmit the physiological metrics recorded on the Frontier X2 to anyone across the world, in real-time. This includes the ability to live-stream your ECG to anyone at anytime as well.

How does the Frontier X2 compare with other ECG devices on the market?

Most devices on the market that allow you to record ECG are either watches or hand-held. Hand-held and Watch ECGs require you to sit still and hold the device with both hands, so they cannot be used during exercise. They also suffer from poor data quality, because the ECG is being acquired from the finger or wrist, instead of the chest. Further, they typically record only 30-60 second segments of ECG and do not allow for long continuous recordings like the Frontier X2.

With the ability to record up to 24hrs of continuous ECG data, the Frontier X2 was designed to get the best quality metrics while on the move, in any environment. The chest-worn design keeps your hands free for sport and is tightly fastened to ensure good data quality during motion. By collecting the ECG from the skin just over the heart, the Frontier X2 can pick up minute electrical changes that may be lost if the ECG is picked up from points further away, like the arm, wrist or fingertips. The ECG quality on the X2 has been validated against a GE Holter Monitor and most closely resembles the V5 lead position of a 12-Lead ECG.

How does the Frontier X2 help keep your heart safe?

The Frontier X2 measures changes in your ECG,which may indicate oxygen deprivation and heart muscle damage. The device subsequently provides your Strain values in real-time on our app. It also warns you with a double-vibration alert if you cross your pre-set threshold, helping you exercise at an exercise intensity that is safe for your heart. This alert can tell you whether you should finish the last lap, run that extra mile, do those last few push ups, or just give your heart a rest.

How does the Frontier X2 help improve your performance?

The Frontier X2 measures both Breathing Rate and Heart Rate. Breathing rate is much more closely correlated with your true internal effort than Heart Rate, because unlike Heart Rate, it is not influenced by external factors like caffeine, lack of sleep, temperature, humidity and stress, which are some of the problems with Heart Rate based training. The Breathing Rate based alerts on the Frontier X2 tell you when to speed up and when to slow down, enabling you to optimize your performance.

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.

Is the Frontier X2 compatible with other external Heart Rate Monitors?

​The Frontier X2 uses BLE Low Energy (BLE) Technology/BLE Smart to sync with other devices as a heart rate monitor. These devices include certain models of ​Apple Watches, Garmins, Whoop Straps, Pelotons and more. If your external device is equipped with BLE/BLE Smart technology, the Frontier X2 should easily sync as a heart rate monitor (HRM) with no issues whatsoever. 

The Frontier X2 can simultaneously connect to a maximum of 3 devices - 1 Mobile App & 2 External HRMs.

While the external device will only reflect Heart Rate, the Frontier X2 itself will reflect various metrics such as ECG (live and recorded), Breathing Rate, Strain, Heart Rate, Body Shock, and Training Load once it is connected to the mobile app, post your workout. You can see a more detailed view on the Frontier X web dashboard as well, once you've uploaded data from your device to the cloud.

Please note that the Frontier X2 does not support ANT+

Is the Frontier X2 compatible with other third-party fitness apps like Strava or Training Peaks?

There is currently no direct integration between the Frontier X2 and these fitness apps. However, there are a couple of workarounds.

When the Frontier X2 is connected to your phone/apple watch app and the phone/watch is carried along - it allows you to record GPS data as part of your workouts as well. The Frontier X2 doesn't have a GPS chip of its own, and thus uses the phone's/watch's GPS. You can then download a .FIT file of your workout from the Frontier X2 dashboard and upload it to apps like Strava, Training Peaks, JeFit etc. for further analysis. 

Alternatively, you can connect the Frontier X2 to an external HRM like a Garmin or Polar and then pass the information on to Strava or Training Peaks from your external HRM. The data uploaded onto Strava in this case will include the Heart Rate measured by the Frontier X2.

What is the battery life of the Frontier X2?

A fully charged Frontier X2 can last for up to 24 hours 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.

Is the Frontier X2 waterproof?

The Frontier X2 is IP67-rated, which means it is waterproof up to 1 meter (approximately 3 feet) for 30 minutes, but it is not suitable for use in saline water. If you plan to use the device while swimming, we recommend wearing it under a tight-fitting wetsuit for best results.

Can the Frontier X2 be worn while exercising or playing sports?

Yes. The chest-worn design of the Frontier X2 keeps your hands free for sport and is tightly fastened to ensure good data quality during motion.

Can you use the Frontier X2 with a pacemaker?

While Frontier X2 has not gone through the official safety testing for use with pacemakers, we have several users who use the device with pacemakers. None of these users have reported any issues.

Frontier X2 or Frontier X Plus: How do I find the right fit for me?

To understand the differences between Frontier X2 and Frontier X Plus, click on this link.

Is the Frontier X2 a medical device?

The Frontier X2 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.