Polar OH1 Optical Heart Rate Sensor

Running Heart Rate Sensors & Straps

Polar OH1 is a versatile and flexible heart rate sensor. It's designed to be worn on upper or lower arm, which makes it a great option for those who do not like to wear a traditional chest strap.Compatible with iOS/Android. It boosts a long battery life and during training can be used without either watch or phone, thanks to built in memory.


Polar OH1 has been designed and tested to work on the upper or lower arm, not on the wrist.

It stores multiple HR files.

  • First time use with Polar Flow to enable memory saving.
  • Training syncs to Flow service via Flow App or Flow Sync

Broadcasting to Polar Club/Polar Go Fit and Team App.

  • Easy to put on anytime, anywhere ideal for group classes in Health clubs, Education and Team sport.

Works with Polar Beat

  • Train with OH1 and Beat
  • Select your sports profile
  • Follow the training phases
  • Analyse the intensity with Polar Sports Zones





  • Bluetooth connectivity + broadcasting (to Polar club/Polar Go Fit and Team App)
  • Stores multiple HR files
  • Regular firmware updates with new features added
  • Up to 12 hours operating time (chargeable, non-changeable battery)
  • Waterproof to 30m

Size and Weight

  • sensor 5g, arm band 12g
  • sensor height 9.55mm and diameter 29.85mm


  • Memory size 4MBytes, 150h - 200h HR training
  • Training data is stored on the OH1 until it's in range of the Polar Flow app to download


  • Accurate optical heart rate sensor, with 6 LEDs
  • Worn on upper or lower arm
  • Choose the best position for your sport/training


  • Alternative to chest strap
  • No watch needed
  • Comfortable


  • Can be used in any exercise or sport as an amateur or at pro level


  • Compatible with iOS/Android (devices which support standart BLE HR profile)
  • Works with Poalr Beat app, Polar M400, M430, V800, V650, M460...

Armband care

  • Textile armband is machine washable


Delivery Information

UK Delivery is FREE on orders over £10.

International Delivery within 3 working days via DHL (prices vary according to country).

Priority First Class Delivery within 3 working days (charge £5).

Next Day Delivery available weekdays on orders placed before 3pm for next working day delivery (charge £7).

Orders placed Monday - Friday before 3pm will be dispatched the same day.

See full delivery details »

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