How to use OH1 on its own

Start a training session

Wear the OH1 around your forearm or upper arm.

Before using OH1 as an independent training device, it needs to be registered and linked to a Polar Flow account.

  1. Switch OH1 on by pressing the button until the LED is switched on and release.
  2. OH1 is now on, press the button shortly twice to switch recording on.
  3. When your heart rate is detected, the green LED will blink rapidly, and you can start your session.
  4. After your training session, you can stop the recording by pressing the button until the LED is switched off. Then sync your training session to the Flow app and web service to view the details of your session. See Syncing for more information.

When used as an independent training device training sessions are stored under the Other indoor Sport Profile. The memory capacity is up to 200 hours of training.


You can transfer data from your OH1 to the Polar Flow app / Polar Beat app wirelessly via the Bluetooth connection. Or, you can sync your OH1 with the Polar Flow web service by using a USB port and the FlowSync software. To be able to sync data between your OH1 and the Flow app / Beat, you need to have a Polar account. If you want to sync data from your OH1 directly to the web service, in addition to a Polar account, you need the FlowSync software. If you've set up your OH1, you have created a Polar account. If you set up your OH1 using a computer, you have the FlowSync software on your computer.

Remember to sync and keep your data up-to-date between your OH1, the web service and the mobile app wherever you are.

Sync with Beat/Flow mobile app

Before syncing make sure:

  • You have a Polar account and Beat/Flow app.
  • Your mobile device has Bluetooth turned on, and airplane mode/flight mode is not turned on.
  • You have paired your OH1 with your mobile. For more information, see Pairing.

Sync your data:

  1. Sign in to Beat/Flow app with your Polar account.
  2. On OH1, press the button until the LED is switched on, and release. OH1 is now on.
  3. Your OH1 syncs with Beat/Flow app automatically if your phone is within Bluetooth range.

Your OH1 syncs with the Beat/Flow app automatically after you finish a training session if your phone is within the Bluetooth range. When your OH1 syncs with the Beat/Flow app, your training data is also synced automatically via an internet connection to the Flow web service.

When syncing with the Beat app, you must have your OH1 paired under Settings > HR sensor in order for the sync to succeed.

Contact Us
Contact Us
Request repair
Request repair

Change region

If your country is not listed on this page, please find your local contact details, retailers and stores and service points on our global site.