Product Price Water Resistance (meter) Heart Rate Monitor Stroke Count Swim Distance Tracking Calories Burned Tracking Pool Length Settings
Polar Verity Sense
US
£68.76 50 m suitable for bathing and swimming Set default pool length in the Polar Flow app

The Polar Verity Sense is a lightweight optical heart rate sensor that records heart rate, distance and pace during pool swimming. Its 50 m water resistance, swimming goggle clip and arm strap suit swimmers and multisport athletes who want wrist-free training data.

★ Ideal for

It suits swimmers seeking accurate heart rate monitoring because its 6-LED optical sensor can record heart rate underwater while the goggle clip keeps it securely positioned at the temple.

Garmin HRM 600 Heart Rate Monitor
US
£118.30 5 ATM

The Garmin HRM 600 is a rechargeable chest-strap heart rate monitor with real-time heart rate and HRV transmission, standalone activity recording, and a 5 ATM water rating. It suits athletes who want accurate training data across running, cycling, swimming, and other activities, including workouts where wearing a watch is impractical.

★ Ideal for

It suits swimmers seeking accurate heart rate monitoring because its chest-strap sensor records and stores heart rate data underwater, then syncs it to a compatible Garmin device after the swim.

COROS COROS HR Monitor
US
£58.41 3 ATM

The COROS HR Monitor is an upper-arm optical heart rate sensor with a multi-channel sensor, automatic wear detection, Bluetooth connectivity, and up to 38 hours of operation. It is designed for runners, cyclists, and multisport athletes, but it is not suitable for swimming or water sports.

★ Ideal for

It suits athletes seeking accurate heart rate monitoring because its multi-channel optical sensor is worn securely on the upper arm, where COROS says it can provide accuracy equivalent to a traditional chest strap.

Garmin Garmin Swim 2
US
£184.84 1.5 metres Yes User-entered pool length

The Garmin Swim 2 is a GPS swimming smartwatch that tracks pool and open-water workouts, including distance, pace, stroke count, stroke type, calories, and SWOLF. It suits fitness swimmers, competitive swimmers, and open-water swimmers who want dedicated swim metrics with underwater heart-rate monitoring.

★ Ideal for

It suits swimmers seeking accurate heart-rate monitoring because it includes an underwater wrist-based heart-rate monitor that records heart rate during swim activities, alongside detailed stroke and distance metrics.