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Congratulations on your new A370! Polar A370 is a sleek and sporty fitness tracker with continuous wrist-based heart rate, advanced Sleep Plus sleep analysis and Polar’s trusted training features. Get an instant overview of your daily activity on your A370 or with Polar Flow app. Together with the Polar Flow web service and the Flow app your A370 helps you to understand how your choices and habits affect your well-being.

This user manual helps you get started with your new A370. To check the video tutorials and the latest version of this user manual, go to

  1. Touchscreen
  2. Button
  • To activate the display: press the button or turn your wrist when you're wearing the fitness tracker.
  • To change the watch face: tap and hold the display in time view, and swipe up or down. Then choose one by tapping it.


Polar A370

Polar A370 is a sleek and sporty fitness tracker that keeps you on the pulse by monitoring heart rate from the wrist 24/7. It tracks your daily steps, distance and calories burned, and keeps you connected with smart notifications from your phone. The advanced Polar Sleep Plus sleep analysis follows your sleeping patterns and gives you feedback on your sleep. Polar A370 helps you train smarter with Polar’s trusted training features, such as heart rate zones and Polar Running Program, and uses your phone’s GPS to track speed and distance during your outdoor workouts. You can even use Polar A370 as a heart rate sensor and connect your heart rate to fitness apps or compatible Bluetooth devices, like Polar training devices, e.g. Polar M460. You can buy additional wristbands separately.

USB cable

The product set includes a standard USB cable. You can use it for charging the battery and syncing data between your A370 and Flow web service via FlowSync software.

Polar Flow App

You can start using your A370 also with the Flow app and update your A370 wirelessly too. View your activity and training data at a glance. Flow app syncs your activity and training data wirelessly to the Polar Flow web service. Get it on the App StoreSM or Google playTM.

Polar FlowSync Software

Polar FlowSync syncs your data between your A370 and the Polar Flow service on your computer. Go to to start using your A370 and to download and install the FlowSync software.

Polar Flow Web Service

Plan your training, follow your achievements, get guidance and see detailed analysis of your activity and training results. Let all your friends know about your achievements. Find all this at