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Polar OH1 Optical Heart Rate Monitor

This product is sold out, and will not come back in stock.
  • Trustpilot review 9.3 out of 45.186 reviews

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ANT+ No Yes Yes No
Bluetooth Yes Yes No Yes
Battery Type Rechargeable battery CR2032 CR2032 CR2025
Colour Black Black Black Black
Size Universal XS / S
£69.30 £60.70 £52.00 £69.40
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8.9 / 10 Average from 7 reviews | Write a review
8.9 / 10

7 reviews


  • accurate (1)
  • comfort (1)
  • easy link to app (1)


  • not the easiet strap to adjust (1)

Most recent reviews

9 / 10

Jonathan, 16 May 2018

reliable, accurate, comfortable and convienent heart rate monitor

I purchased the Polar OH1 Optical heart rate monitor as I have never liked wearing chest straps when measuring heart rate. It did not disappoint. I had concerns over how accurate it may be but after a few seconds it picks ups a reliable reading. I have compared this to other devices from Polar and it is the same reading. The best selling point in my opinion is the ease of use as it can be worn on the forearm or upper arm. 12 hours battery life with it only taking approximately 45-60 minutes to fully charge out of the box. If you are looking for a cost effective, reliable heart rate monitor, you have found it.


  • accurate
  • comfort
  • easy link to app


  • not the easiet strap to adjust

9 / 10

Peter, 22 November 2018

Werkt prima


  • Draag comfort
  • Toch zeer nauwkeurig

10 / 10

Peter, 6 November 2018

Werkt super en zit ook super

Doet het rond uit goed!! En zit ook stukken fijner als dat ding om je borst! Ik heb hem trouwens gekoppeld aan een Iphone 7


  • zit goed
  • werkt prima
  • meet nou keurig


  • je moet hem opladen

7 / 10

Marinus, 13 September 2018

met polar wel goed met runkeeper slecht

8 / 10

Kees, 31 August 2018

probleemloos, discreet, comfortabel, nauwkeurig.

De OH1 draag ik om de linker bovenarm onder mijn wieler jersey. Heel compact, Ik voel niet eens dat ik hem om heb. De koppeling met mijn Garmin gaat vlekkeloos. Nauwkeurigheid lijkt prima. Moet wel redelijk snel via USB weer opgeladen

All specifications

Manufacturer specifications

• Weight: Sensor 5 grams, Bracelet 12 grams
• Height: 9,5 mm
• Diameter: 29,85 mm
• Arm band: Size M-XXL, machine washable


• Mobile iOS devices: iPhone 4S and later
• Mobile Android devices with Bluetooth 4.0 and Android 4.3 and later

Additional information

• Updates via Polar Flow
• 4 MB memory capacity, up to 200 training hours
• Rechargeable 45 mAh lithium polymer battery
• Up to 30 metres water resistent

Works with Polar products

No a fan of training with a chest strap? Then the Polar OH1 is an excellent alternative: works with all sports watches, trackers, and cycling computers by Polar which support Bluetooth.

Your phone is your training buddy

The Polar OH1 streams your heart rate to many popular fitness apps on both iOS and Android phones in real-time. The Polar OH1 works perfectly with Polar Beat, Polar's free fitness- and training app. With the Polar OH1 and Polar Beat, your heart rate data is streamed directly to the screen of your phone, while your headphones provide you with audio guidance during your training.

Only use the OH1

Rather train without a watch or phone? The Polar OH1 has an internal memory which can store up to 200 hours of training data. Synchronise your training data via Polar Flow, the free App and webservice by Polar, through Bluetooth or your computer through USB.

Optical heart rate measurements

The Polar OH1 registers your heart rate through Polar's high-grade 6-LED optical heart rate technology.

Heart rate sensor

You can use the Polar OH1 as a heart rate transmitter in combination with all Bluetooth-compatible Polar devices, numerous fitness devices, and Bluetooth enabled fitness equipment.

Internal memory

The internal memory of the Polar OH1 can store up to 200 hours of training data. You can synchronise your training data using Polar Flow, both through the Flow app and the webservice.

Comfortable fabric arm band

The Polar OH1 armband sits on your arm discreetly and has an excellent fit. The band is made of soft textiles which can be machine washed.


The Polar OH1 will continue to improve long into the future via wireless updates

Long battery life

Train up to 12 hours between charges. Recharge using the Polar OH1 USB-adapter (included).


The Polar OH1 is waterproof up to 30 metres.