I initially wrote a review giving this a one star. It was reliable in its unreliability and I had difficulties getting through to customer service. Customer services did eventually get in touch and were as helpful as they could be. They sent out a second device, which unfortunately still had issues. Following a software update, these do seem to have been resolved apart from the issue of the app not showing the correct battery level when the device is recording. That said, I'll review how the product works (or not) for me. The marketing seems to aim at both the extreme fitness community (of which I'm not able to comment on the appropriateness of the device), and the heart health community. When I purchased the device I was looking for something that could record ECGs for 24 hours. I liked that it also recorded my breathing and at first glance, it seemed to identify any arrythmias which was important for me. I have now given it a good try. The recording is now reliable and I can download 3 hour episodes of ECG on PDF which is useful. When I took these to the cardiologist he questioned whether there was any arrythmia identification or was it just left up to me to guess what was important. This is where the device falls down. I had a Kardia device which would identify specific arrythmias, but was limited to a 5 minute recording when sat still. This device does seem to do a lot, but why there is no AI interpretation of arrythmias, I don't know. What it picks up as different beats are usually normal ectopics but it seems to miss other issues such as atrial flutter, AF, SVTs etc. I don't want to become an ECG expert to know when something needs bringing to a cardiologist. I expect the device to pick these things up and inform me, which this doesn't. For me, I'm not sure this device gives what I need. Perhaps it should focus on the fitness market alone.

This is an excellent product and provides insightful data on cardiovascular health during exercise. It integrates well with the iPhone and Garmen products. I have been using this for over a year for cycling and running. They redesigned the charging port which is an improvement over an earlier design.

Fourth Frontier is the best invention I have come across since sliced bread. As an athlete who underwent open heart surgery in 2019, I was thrilled to know about this new heart rate monitor. I have tried all the new wearables available in the market, but the wrist or ring versions didn't work well for me. However, this wearable chest strap is the most accurate among all the ones I have tried, with several unique features that others don't have. The real-time ECG reading while doing sports is a game-changer. Moreover, their customer service is excellent, and they have always been prompt in answering my queries.

I have been utilizing the Frontier X2 for more one year and it is really a great product. Due to Tachycardia issues, I now feel very confident when I'm doing training activities and even races. Esay to sync with Fourth Frontier and Garmin apps. I've had challenges with the firmware last year. Good support team, quick reply, easily accessible, and very helpful. I recommend it

This product worked well, though required many resets over the 13 months that it worked. Unfortunately the hardware ceased to work after 14months of daily use and the company would not replace as it was out of 12 months warranty. Unacceptable for a product of this cost, downloading the QA risk on customers. The support ticket is: #64909 (Sneha Snetty). Update to 4 stars from one, New replacement unit has arrived and is functioning, thank you for your customer recovery.

I have been utilizing the Frontier X2 for about 11 months and I really like it. I like the ease of use and that it offers continuous ECG data collection for as long as I want (typically many hours). I can then access and view ECG reports that are automatically created and accessible from the phone app and also via a web browser. The support from Fourth Frontier is also good and responsive.

Have been leading an active lifestyle with Tachycardia but never had a device which does ECG on the move plus all other watch-based HR readings were inaccurate. Mighty pleased with FX2 I can say with confidence that this is not just a simple heart-monitor but the most accurate life changing device I have been using. It increases your confidence and monitoring capability immensely.

I'm thrilled I chose the Fourth Frontier device over others I researched more than 2 years ago. It's proven to be reliable with excellent battery life, providing comprehensive heart data for monitoring. Whether I'm cycling, running, swimming, or tracking my sleep due to a heart condition, the device has enhanced my understanding of my heart's performance in relation to various factors. Recently, I faced my first issue in over 2 years, where workout data wasn't syncing. The support team promptly guided me through a device reset, resolving the problem efficiently.During an overseas trip, I forgot my device, and the team reached out, demonstrating exceptional customer support by checking on my well-being. Over time, I've observed continuous improvements, such as integration with Google Fit and Strava, allowing me to track workouts seamlessly. The device's price is justified by its features. My only suggestion would be to enable GPS tracking on the device itself, without the need to activate the app on my phone during cycle rides.

I love this device. Despite the fact that it stopped syncing data after only 15 months, the company did all it could to help me and made me a great offer to replace it. I did not take them up on their offer, because I was able to buy it from Amazon with a 3 yr warranty for just a bit more. I'm hopeful that this new unit will last longer than 15 mos, but with the warranty, I no longer care. Either way, the data has been very helpful with my training routine and overall health monitoring. The ECG is a game changer that I believe no one else has.

excellent i had problem and they fixed it definitely recommend them