Search  for anything...

Frontier X2 Smart Heart Rate Monitor Chest Strap, Wireless Heart Health Monitor with Strain, Breathing Rate, and Fitness Tracking with Continuous Heart Rate Monitoring

  • Based on 27 reviews
Condition: New
Checking for the best price...
$579.00 Why this price?

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Dec 17
Order within 10 hours and 25 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • MONITOR YOUR HEART CONTINUOUSLY: The Frontier X2 Smart Heart Health fitness monitor is designed to record your heart rate for up to 24-hours during exercise
  • REAL-TIME VIBRATION ALERTS: Train in the right zone with confidence and without distractions by setting real-time, personalized, single and double buzz vibration alerts. These alerts will tell you when you've reached a desired or threshold heart rate while exercising or while at rest.
  • MEASURE WHAT MATTERS: Measure changes in Rate, and Strain to better understand your heart.
  • LIVE-STREAM AND SHARE YOUR HEART RATE: Remotely live-stream your heart rate, instantly and securely, to any web browser or mobile device across the world. Share your information with friends and family or medical providers if you choose. The data is yours to use
  • VERSATILITY: Wear your Frontier X2 Heart Monitor when running, Cycling, rowing, swimming, going to the gym, and training both indoors and outdoors. The Frontier X2 is fully waterproof up to 1.5 meters, and three times faster than the original Frontier X.
  • SUPREME ACCURACY: Widely recognized for its top precision by many sources, Frontier X2 is the Most Accurate Heart Monitor in Frontiers history. Frontier X2 provides top quality heart monitoring and it's the choice of many pro athletes.
  • SMARTPHONE APPS AND WEB DASHBOARD: More than just counting heart health Lifetime Free Access to key Frontier X health metrics like heart rate, Strain, Activity Load, Training Load, Body Shock, Health Tracking and more. Record, track and analyse your heart health right on your smartphone with the Fourth Frontier app
  • EASY TO USE CHEST STRAP: With improved electrodes, an easy-to-use buckle and silicone dots, the strap is comfortable and interference-free, and stays put when you're on the move.

Memory Storage Capacity: 100 MB


Special Feature: Activity Tracker


Battery Capacity: 4 Milliamp Hours


Connectivity Technology: Bluetooth


Battery Cell Composition: Lithium Polymer


Shape: Rectangular


Screen Size: 1 Inches


Brand: Frontier X


Model Name: Frontier X2


Style: Modern


Product Dimensions: 12 x 5 x 3 inches


Item Weight: 0.882 ounces


Item model number: Frontier X2


Batteries: 1 Lithium Polymer batteries required. (included)


Date First Available: January 2, 2024


Department: Unisex-Adult


Manufacturer: Fourth Frontier Technologies LLC


Country of Origin: Taiwan


Item Weight: 25 Grams


Standing screen display size: 1 Inches


Memory Storage Capacity: 100 MB


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Accurate!
Unfortunately, watches have never been able to read my pulse. I don't have the strongest pulse on my wrist. This device on a chest strap is about 99% accurate, compared to watches which are only about 80-90% accurate. I have a heart condition so I wanted a more accurate way to track my heart for my doctor. It also runs a continuous monitor ECG during workouts which is pretty cool. There are additional metrics such as heart strain and heart rhythm which I’m trying to figure out. It also syncs up the heart rate with my Garmin fairly easily so I use it while running. I was able to catch what my heart does while working a 4-hour shift, and what happens while I sleep! I just use the "indoor activity" option whenever I want to track myself while resting, working, or sleeping, and I was able to show the ECG strips from the web app to my doctor. ... show more
Reviewed in the United States on March 27, 2024 by Neha

  • My doctor accepts the report
The Frontier X2 works amazingly well, especially if you need some of its key features. As an example, it allows you to send your doctor a ECG trace which is a very important feature. Frontier X2 is a great choice for people concerned about their heart health. It's not a medical device but it gives you all the data which is required to measure your heart health such as EKG monitoring, Heart Rhythm, Heart Strain etc... Frontier X2 work well for recording HRV over the course of a full day and even during sleep. You get the full ECG recording. It gives you 24 hours continuous EKG monitoring which makes it the only device with Continuous Heart Monitoring Feature. Fourth Frontier keeps on updating firmware to address problems if any. For Rebooting, You have to press and hold the button long enough to get a forced reboot in order to start the device. Finally, Kudos to Fourth Frontier Customer Support team. They are available 24*7 to address your queries. ... show more
Reviewed in the United States on March 20, 2024 by Reddy

  • Severe Rash from HRM Chest Strap (Updated)
The chest strap created a severe rash on my chest. I requested a replacement chest strap from the company (which costs $20 if purchased separately), but they balked. I provided a photo showing the rash, but that was not good enough for them. They asked me to wash the strap and wait for the rash to heal before wearing it again. Nope! I am returning it and not waiting for the strap to injure me again. ================================================================================== Update on May 20, 2024: I am upgrading my product review to 3 stars due to the improved customer service response I have received from the company; this has nothing to do with the quality of the X2 HRM/ECG. Since I posted my first review, the company has reached out to me multiple times in an effort to make right on the chest strap issue. They have offered a free replacement strap, a full refund, and a discount on the purchase of another X2. I accept that they are truly remorseful for the way they handled the chest strap, and believe they *may* have learned from this experience and will do better at customer service in the future. Time will tell... I do not need the free replacement strap and do not presently plan to take advantage of the purchase discount offer. ... show more
Reviewed in the United States on May 8, 2024 by James K. Clements

  • Been using and testing this since April
Is it expensive, yes,but it is worth it ,YES . First off, this monitor is well made,I own several heart chest straps,even arm bands and this monitor is the best in that is is really solid ,you can tell it isn't cheap the first time you hold it. The strap is nice too .,doesn't irritate. Only thing is I didn't get cap to cover the charging port. I would preferred they used USB C port to charge . Charging cable is very well made ,but if you lose it you'll have to contact company for replacement as its not a common connection. Rare occasions it doesn't sync, but it eventually does .No stars taken away for these minor details because they aren't doing the work. You can record your data without using app or needing Bluetooth or WiFi or any signal,this feature alone is worth it. To start recording just hit the blue button twice and it will vibrate twice to let you know recording has started. Reason the button takes some pressure to press is----> when monitor is in use your chest won't shut it off when bending over or skin folding onto button or whatever ,this avoids accidentally activating the button again or shutting it down. Then when done with workout you bring up app and sync your data. App will sync data and erase data on heart strap so it will be ready for next use,so you don't have to do that step yourself,the app does it for you. Now you can view your data on app or internet, nice touch to have option to view on a larger screen from PC. Plus the explanations /meanings of the readings of your data is really good,they do a great job explaining what everything means. Ok ,let's talk about the ability to record and send your ECG reading to your doctor other than that's a HUGE PLUS ! Continuesly heart monitoring and live sharing is a huge plus and I don't think people understand how important this is. Most monitors only monitor every 1 minute intervals or more and can't do that for 24hrs straight and record it at same time and data is very accurate! Is it costly, yes,but I say it's worth it . ... show more
Reviewed in the United States on July 30, 2024 by 🌟 Tannhäuser Gate 🌟

  • Overpriced test device
This 600$ device uses a micro usb connection in 2024. That alone should raise eyebrows. The reliability is poor at best and it doesn't have basic functions such as measuring O2 sat, which a smart watch at a quarter of the price can do. I'm trying to think of what the use-case for this device is, but at anywhere near it's current price I cannot find one. ... show more
Reviewed in the United States on August 14, 2024 by Cielo Medica

  • Good ECG readings while running. Best ECG Device in USA.
I’m pleasantly surprised with the ECG quality while running. I was a little skeptical when I bought this and thought that there was no way the ECG would come through clean while running. I’ve worked with ECGs for years stress testing patients and know that ECG is often bad when jogging/running. This actually gives a clearer reading than the hospital ECGs I use at work! It’s only 1 lead, but the quality is surprisingly good. The chest strap does a good job of keeping the electrodes steady. ... show more
Reviewed in the United States on May 20, 2024 by Alaika Sridhar

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...