The new generation of smartwatch that predicts arrhythmias

In recent years, smartwatches have evolved from simple fitness aids to comprehensive health tools. With the rapid advancement of technology, modern smartwatches are no longer limited to recording steps or displaying notifications. Today they function as little “health advisors” on our wrist, with capabilities that until recently we would have considered impossible.

At the heart of this change is heart monitoring, and in particular the early detection of cardiac disorders. The new generation of smartwatches can detect heart rhythm problems in real time and alert the user before a serious episode develops. This could prove life-saving for people who are unaware they have heart problems or for those who prioritize prevention.

In this article, we will take a closer look at the features of new smartwatches that detect heart disorders, how they work, what their benefits are, and which companies are leading this new era of health. If you are interested in taking care of your heart and want to learn how a smartwatch can protect you, keep reading.

📋 Article Contents

✅ What are heart rhythm disorders?
(I.e. How smartwatches work to detect problems
🢢 Top features of new generation smartwatches
???? The best smartwatch options for heart monitoring in 2025
???? Benefits of early problem detection via smartwatch
⚠️ Limitations and what to watch out for
???? ️ Availability of smartwatches in the Greek market (2025)
(I.e. Conclusions - What awaits us in the future

✅ 1. What are cardiac rhythm disorders?

Heart rhythm disorders are problems with the regularity with which the heart beats. They can be mild, but in many cases they are associated with serious risks such as stroke or cardiac arrest. The most common form is atrial fibrillation, which affects millions of people around the world. Research shows that many people do not know that they suffer from some form of arrhythmia until a serious symptom appears. This "silent" presence makes early detection extremely important. This is where smartwatch technology comes in to provide solutions.

🔵 2. How smartwatches work to detect problems

Modern smartwatches with the ability to detect heart disorders use special sensors that measure the pulse and electrical activity of the heart. The data is analyzed with sophisticated programs to identify rhythm abnormalities. Models such as the Apple Watch Series 9 and the Samsung Galaxy Watch 6 have an electrocardiogram (ECG) function, which allows the user to perform a simple heart check by touching the watch. If an abnormal rhythm is detected, the watch immediately notifies, while the data can be stored and sent to the doctor. This technology approaches the accuracy of medical examinations, but does not replace them. It mainly functions as a prevention and early warning tool.

🟢 3. Top features of new generation smartwatches

Smartwatches of 2025 are not just a sensor on the wrist. They are comprehensive health devices that leverage artificial intelligence, advanced sensors, and constant mobile connectivity to offer a more complete picture of the body's condition.

① New generation sensors

At the heart of every arrhythmia-detecting smartwatch is a combination of sensors that measure the pulse with light beams and record the heart's electrical signals, much like a cardiologist's office. Modern sensors can detect small changes in rhythm that indicate possible disorders.

② Continuous monitoring 24 hours

Today, smartwatches are not limited to taking measurements only when the user requests it. Continuous monitoring means that every change in heart rate is recorded, even during sleep. This creates a comprehensive picture of how the heart works in different conditions, such as rest, exercise or stress. The user can see reports with trends that repeat over days or weeks, which helps to better understand their health and prevent potential problems.

③ Instant alerts and proactive analysis

One of the most important features of modern smartwatches is the ability to provide real-time alerts. If the watch detects an abnormality in the heart rate, it immediately informs the user with a notification accompanied by a brief explanation and graphs. This way, the user can understand what happened and act in a timely manner. In many devices, the analysis is done with the help of artificial intelligence, which tries to predict potential problems before they develop.

④ Medical data export

Today's smartwatches don't just record data – they enable you to use it medically. Most devices offer cardiogram reporting, cloud storage, and synchronization with specialized health platforms. This allows the user to easily share data with their doctor to get a more complete picture of their heart condition. This makes monitoring and prevention easier, especially for people who need regular check-ups.

📢 4. The best smartwatch options for heart monitoring in 2025

2025 brings with it an impressive array of new smartwatches, incorporating even more advanced heart rate monitoring technologies. Many models feature improved sensors, longer battery life, and better accuracy in measurements. It’s important to remember that these features can provide valuable health insights, but they do not replace medical examinationsEach measurement or predictive analysis acts as a support tool for the user and the doctor, offering a more complete picture of the daily functioning of the heart.

① Apple Watch X (2025 Edition)

Apple continues to pioneer health tracking with the anniversary edition of the Apple Watch X. The watch features an improved heart rate sensor and electrocardiogram (ECG) function, while built-in artificial intelligence can detect patterns that indicate possible heart dysfunction. In addition, the device offers better sleep analysis and more comprehensive health reports. Main advantages:

Third generation sensor – more accurate heart rate monitoring
ECG and cardiac indications recording
Predictive analysis as a support tool (not diagnosis)
Data export for doctors and easy sharing
Battery life approximately 36 hours (depending on usage)

② Samsung Galaxy Watch 7 Ultra

Samsung offers reliable heart rate monitoring with the Galaxy Watch 7 Ultra and is working with medical applications in Europe. The new generation sensors measure the pulse accurately and are combined with sleep analysis, giving a more comprehensive picture of health. In addition, the eSIM feature allows the watch to work independently of the mobile phone, which makes it particularly practical. Main advantages:

Heart rate measurement accuracy
Support for medical platforms and applications
Sleep analysis combined with heart rate
Predictive analysis for heart problems (in development)
Battery life approximately 48 hours

③ Withings ScanWatch Horizon 2

Withings ScanWatch Horizon 2 - Hybrid watch with heart rate monitoring

Withings continues to innovate with the ScanWatch Horizon 2, a hybrid watch that combines classic, elegant design with high-precision medical tools. 24-hour automatic cardiac monitoring allows continuous recording without manual activation, offering greater safety and peace of mind for the user.

Main advantages:

24-hour monitoring of cardiac disorders and heart rhythm
Battery life up to 30 days
Discreet, elegant design
Medical approval in the EU and the USA where required

🟠 5. Benefits of early problem detection via smartwatch

Using a smartwatch with heart monitoring offers significant advantages:

Timely information before symptoms appear, allowing time for medical evaluation.
Daily monitoring without extra effort or frequent visits to the doctor.
Psychological safety as the user feels more confident about their health.
Possibility of support from doctors who can access daily activity data.
Prevention of serious events such as strokes or cardiac arrest.

🔴 6. Restrictions and what to watch out for

Although technology is evolving, there are some limitations:

Smartwatches do not replace a full medical check-up.
Incorrect results may occur.
Accuracy depends on proper use and position in the hand.
Smartphone and app compatibility required for full functionality.

🔴 7.Availability of smartwatches in the Greek market (2025)

Huawei Watch GT 5

Available in versions 41 mm and 46 mm, with screen AMOLED and autonomy up to 14 daysYou will find it in large stores such as Skroutz, Public, Kotsovolos and Germanos.

41 mm 46 mm AMOLED Up to 14 days

Available at: Skroutz Public Kotsovolos Γερμανός

Fitbit Sense (Sense series 2 and above)

Available at stores like Skroutz and Public, with tracking features heart rate, stress and temperature. It Sense 3 has been announced internationally and is expected to be released in Greece as well.

Heart beat Stress Temperature SpO2

Available at: Skroutz Public

Note: The availability of Sense 3 in Greece is expected within 2025.

Garmin Venus 3

It is already being released in Greece in editions 45 mm and 3S (smaller case). You will find it at Skroutz, Public, Kotsovolos and Garmin Greece, with screen AMOLED and autonomy up to 14 days.

45 mm 3S AMOLED Up to 14 days

Available at: Skroutz Public Kotsovolos Garmin Greece

Apple Watch (Series 9 and Anniversary X)

Apple Watch is officially available in Greece through Apple Store, Public, iStorm and Kotsovolos. The anniversary Apple Watch It is expected to be released in 2025.

Series 9 Apple Watch X (expected) Apple ecosystem

Available at: Apple Store Public iStorm Kotsovolos

Note: The Apple Watch X is expected to be available in 2025.

Samsung Galaxy Watch (series 6 and 7 Ultra)

The Galaxy Watch is available in all major technology stores in Greece (Samsung Store, Public, Kotsovolos, Germanos). The Galaxy Watch 7 Ultra has already been announced and appears in Greek e-shops.

Series 6 7 Ultra eSIM (models)

Available at: Samsung Store Public Kotsovolos Γερμανός

Note: The availability of 7 Ultra is gradually expanding in Greek online stores.

🟣 8. Conclusions - What awaits us in the future

The new generation of smartwatches with heart rate monitoring capabilities is a major step forward in preventive medicine. It is not just a technological gadget, but a tool that can save lives. Continuous monitoring, notifications and sending data to doctors make these watches valuable allies for our health.

With the development of artificial intelligence and the improvement of sensors, even more specialized functions are expected in the future, such as precise monitoring of breathing or oxygen levels. Prevention remains the best cure, and with the help of technology, our health can literally be on our wrist.

(I.e. Last updated: December 2025

✍️ Evangelos
Its creator LoveForTechnology.net — an independent and trusted source for tech guides, tools, and practical solutions. Each article is based on personal testing, evidence-based research, and care for the average user. Here, technology is presented simply and clearly.

Wednesday December 3 2025