When it comes to swimming, monitoring your heart rate can significantly enhance your training efficiency and safety. Choosing a heart rate monitor designed for swimming or with waterproof capabilities allows you to track your performance comfortably and accurately underwater. Below is a summary table featuring the top heart rate monitors ideal for swimming, combining comfort, connectivity, and precision for varied aquatic needs.
| Product Name | Brand | Key Feature | Link |
|---|---|---|---|
| Garmin HRM-Pro Plus Premium Chest Strap | Garmin | ANT+ & Bluetooth real-time transmission with running dynamics | View on Amazon |
| Polar OH1 + Waterproof Optical Heart Rate Monitor | POLAR | Wear on arm or temple, includes goggle strap clip | View on Amazon |
| POLAR Verity Sense Optical Heart Rate Monitor | POLAR | Compact armband sensor with 30+ hours battery | View on Amazon |
| Garmin Swim 2 GPS Swimming Smartwatch | Garmin | Underwater heart rate and stroke metrics tracking | View on Amazon |
| Polar H10 Heart Rate Monitor Chest Strap | POLAR | Highly accurate sensor with Bluetooth & ANT+ connectivity | View on Amazon |
Garmin HRM-Pro Plus Premium Chest Strap Monitor

The Garmin HRM-Pro Plus offers premium real-time heart rate and heart rate variability data transmission via ANT+ and Bluetooth Low Energy (BLE), compatible with Garmin devices, fitness equipment, and popular apps. It captures running dynamics such as vertical oscillation and stride length, allowing comprehensive fitness feedback beyond swimming. This chest strap is built for multi-sport use, providing reliable pace and distance computations for treadmill or indoor activities. Its advanced sensor ensures precise monitoring during swimming sessions, making it a versatile option for athletes looking to improve their form and endurance across various activities.
Polar OH1 + Waterproof Optical Heart Rate Monitor

The Polar OH1 + monitor is designed for versatility, allowing wear on the arm or against the temple using a goggle strap clip, making it well-suited for swimmers. Its soft textile armband guarantees a snug fit during movement. Connectivity options include Bluetooth and ANT+, enabling simultaneous pairing with smartwatches, Polar Flow app, and third-party fitness apps. The waterproof design and included accessories ensure that this optical heart rate monitor remains steady and comfortable during pool workouts or open water swimming, supporting immersive aquatic training without compromising heart rate tracking accuracy.
POLAR Verity Sense Optical Heart Rate Monitor Armband

The POLAR Verity Sense offers comfort and convenience with its slim, lightweight design that slips onto the upper or lower arm or clips onto goggles. It keeps wrists free without sacrificing accuracy, perfect for swimmers wanting minimal interference. The device offers extensive connectivity with two simultaneous Bluetooth channels, ANT+, and support for numerous third-party apps, facilitating live heart rate broadcasting. Its long battery life (up to 30 hours) ensures extended use, making it suited for endurance swimmers and multi-sport enthusiasts who demand reliable heart rate tracking across activities.
Garmin Swim 2 GPS Swimming Smartwatch

The Garmin Swim 2 smartwatch is specially designed for swimmers, equipped with underwater heart rate tracking and GPS features suited for pool and open water. It records essential swim metrics such as distance, pace, stroke count, stroke type, and swimming efficiency (SWOLF score). Battery life supports long training sessions with up to 7 days in smartwatch mode and up to 72 hours in pool mode. Its swim-specific functionality makes it an effective tool for swimmers who want detailed performance data alongside heart rate monitoring.
Polar H10 Heart Rate Monitor Chest Strap

Known for supreme accuracy, the Polar H10 chest strap is a trusted option for swimmers looking for precise heart rate data. It supports Bluetooth, ANT+, and 5 kHz transmission, providing excellent connectivity options and allowing simultaneous Bluetooth connections. Its waterproof design enables reliable use in swimming environments. Compatibility with most HRM-compatible equipment and apps makes it versatile for multi-sport athletes. The chest strap is adjustable and comfortable, making it suitable for extended training sessions in water.
Buying Guide for Swimming Heart Rate Monitors
Waterproof and Swim-Specific Design
Ensure the heart rate monitor is explicitly rated as waterproof or designed for swimming. Devices with strong water resistance or swim-specific features provide accurate readings even in chlorinated pools or open water, preventing damage and signal loss underwater.
Comfort and Secure Fit
For swimmers, comfort and fit are critical. Chest straps must be snug but not restrictive, and optical sensors should securely attach to arm bands or goggles to prevent slippage during strokes. Lightweight and non-intrusive designs improve swimming efficiency and user experience.
Connectivity Options
Look for devices offering multiple connectivity protocols such as Bluetooth and ANT+ to maintain seamless communication with smartwatches, smartphones, and fitness apps. Some products support simultaneous connections, enabling broader compatibility and real-time monitoring.
Battery Life and Ease of Use
Long battery life is essential for extended swim sessions or triathlon training. Devices with easy-to-replace or rechargeable batteries reduce downtime. Additionally, simplicity in operation, such as one-button controls, enhances user convenience especially when handling wet gear.
Additional Features for Multi-Sport Use
If you swim as part of a larger fitness routine, consider models that capture additional data such as running dynamics, pace, stroke count, or swimming efficiency (SWOLF). Smartwatches with GPS or fitness trackers with multiple sport modes provide comprehensive training insights beyond swimming.