10 Best Heart Rate Monitor For Swimming 2025 in the United States

The Polar H10 Heart Rate Monitor is a strong choice for swimmers and other athletes looking for an accurate and versatile heart rate tracking solution. Its waterproof design ensures it can handle the rigors of swimming, making it suitable for those who want to monitor their heart rate during water-based activities. One of its standout features is the supreme accuracy of heart rate tracking, which is especially appreciated by professional athletes. It pairs seamlessly with a variety of devices, including major sports watches and fitness apps—this means you can easily integrate it into your existing workout routine.

Comfort is often a concern with heart rate monitors, but the Polar H10 comes with a pro strap that has improved electrodes and a comfortable fit, allowing you to focus on your performance rather than your equipment. Its internal memory feature is a great bonus, as it lets you store data for one training session without needing to connect to a device.

There are a few drawbacks to consider. While it does boast excellent connectivity options, some users may find the initial setup a bit complicated, especially if they are not tech-savvy. Additionally, while the battery life is generally good, users should be aware that frequent use may require regular battery replacements. The strap size is limited to M-XXL, which could be a concern for those outside this range.

The Amazfit Band 7 Fitness & Activity Tracker stands out as a solid choice for swimming enthusiasts looking for a heart rate monitor. With a water resistance grade of 5 ATM, it can handle depths of up to 50 meters, making it suitable for pool swimming. One of its key strengths is the variety of sports modes it offers, including a specific mode for pool swimming that accurately tracks swimming data, which can be beneficial for those aiming to improve their performance.

Moreover, the device features impressive heart rate tracking technology, measuring heart rate, blood oxygen levels, and stress levels all at once. This capability allows for quick health assessments, which is especially useful during workouts. The large 1.47” AMOLED display enhances visibility and accessibility of information, while the long battery life of up to 18 days means users won't have to worry about frequent recharging.

There are a few drawbacks to consider. While the connectivity via Bluetooth is effective, it might limit compatibility with some devices, so checking whether it works with your smartphone before purchasing is essential. Additionally, while the heart rate and swimming tracking features are robust, some users might find that it lacks in-depth analytics when compared to more advanced, dedicated swimming monitors. Comfort and fit are generally favorable, with a lightweight design, but some users with larger wrists may find it a bit snug. Lastly, while the built-in Alexa adds convenience, it may not be a critical feature for everyone.

The Polar H9 Heart Rate Sensor is a versatile and affordable heart-rate monitor designed to cater to various sports activities, including swimming. One of its notable strengths is its water resistance, making it suitable for tracking heart rate underwater. It uses advanced heart rate tracking technology built on years of scientific research, ensuring reliable data accuracy. This makes it a dependable choice for swimmers who need precise heart rate measurements during their workouts.

Additionally, the soft chest strap is designed for comfort and a secure fit, which is crucial for those long swimming sessions, although some users might find chest straps less comfortable compared to wrist-based monitors. The battery life is impressive, offering up to 400 hours of usage, meaning you won't need to worry about frequent recharges. In terms of connectivity, the Polar H9 excels with its compatibility with various Bluetooth and ANT+ devices, including smartphones, sports watches, gym equipment, and popular fitness apps like Polar Beat and Nike+ Run Club. This makes it easy to integrate into your existing workout ecosystem.

While it doesn’t have a screen to display data directly on the device, its seamless connectivity allows you to view your stats on connected devices. The Polar H9 is a solid choice for swimmers and other athletes who want a reliable, accurate, and comfortable heart rate monitor that offers excellent battery life and connectivity options. However, if you prefer a device with an integrated display or a different form factor (like a wrist-based monitor), you might want to consider other options.