Polar Polar A370 Fitness Tracker with 24/7 Wrist Based HR

Heart rate tracking with Polar A370 is simpler than ever. Whether during a workout or continuously throughout the day, Polar’s proprietary 2-LED optical heart rate solution measures your heart rate easily, conveniently and accurately.

Sleep is vital to your fitness and well-being.
- The Polar A370 features Polar’s advanced Sleep Plus system, which automatically tracks the timing, amount and quality of your sleep and detects any interruptions.
- Set your preferred sleep time, rate your sleep, and receive insightful feedback to help you catch your best Zzz’s.

Continuous HR
- Tracking your activity is more than just counting steps.
- Polar A370’s wrist-based heart rate monitor tracks your heart rate 24/7, giving you a more accurate look at your daily activity and calories burned.
- Easily see how your heart rate responds to the peaks and valleys of your day.