Small sensor, big functionality. Ideal alternative to a heart rate chest strap. For all sports - on land and in the water Not a fan of chest straps? Here comes a super alternative.
Polar OH1 is a bracelet with an optical heart rate monitor that combines versatility, comfort and simplicity. It sits comfortably on your arm and measures your heart rate using Polar's high-quality optical heart rate monitor. Not a fan of chest straps? Polar OH1 is an excellent alternative for you: it is compatible with all Polar Bluetooth compatible sports watches, fitness tractors and bike computers. The Polar OH1 is an optical pulse sensor that combines versatility with comfort and ease of use. You can use it alone or pair it with various fitness apps, sports watches and smartwatches via Bluetooth and ANT+. The small, practical Polar OH1 introduces you to the world of heart rate controlled training and helps you train smarter instead of harder.

Bluetooth and ANT+ connectivity
You can connect the Polar OH1 in many different ways. You can use Bluetooth and ANT+ simultaneously and transfer your heart rate to different devices in real time.

Training with Polar Beat
The Polar OH1 is an excellent addition to the Polar Beat App, the free fitness and training app from Polar. Use the Polar OH1 and the Beat app to see your pulse on your smartphone in real time and get audio instructions through your headphones.

Whether on land or in the water, all sports are covered.
The Polar OH1 measures your pulse - whether in water or running.

Comfortable bracelet
You can wear your Polar OH1 on your upper or lower arm. It can be easily put on and taken off everywhere. The bracelet is available in many different colours and is changeable.

Attachment to your swimming goggles
The Polar OH1 product set also includes a swim goggle clip so that it can be easily used when swimming. When swimming, attach the Polar OH1 to your goggles with the clip. The sensor stays securely in place and you can concentrate on swimming. The Polar OH1 product set includes a goggle clip for easy use when swimming.

The choice is yours: use it with other equipment or alone.
Train with your smartphone or leave it at home: The numerous application options leave nothing to be desired.

Transfer your heart rate to apps
Polar OH1 transmits your heart rate in real time to many popular fitness apps on iOS and Android phones. Polar OH1 is a great addition to Polar Beat, Polar's free fitness and training app. With Polar OH1 and Polar Beat you get real-time data about your heart rate directly on the screen of your phone and audio instructions through your headphones.

Compatibility
iOS mobile devices: iPhone 5 and higher, with iOS 11 or higher; Android mobile devices with Bluetooth 4.0 feature and Android 5.0 or higher.

Training without a watch or smartphone: Standalone mode
You prefer training without a watch or smartphone? The Polar OH1 has an integrated memory that can store up to 200 hours of training data. After training you can easily synchronize your data with the Polar Beat App.

Internal memory
You'd rather train without a watch or a phone? Polar OH1 has an integrated memory that can store up to 200 hours of training data. You can easily sync your data via Bluetooth or via the USB adapter and your computer with Polar Flow, the free app with web service from Polar.

Battery
The OH1 has a rechargeable LiPo battery with 45 mAh and a battery life of approximately 12 hours of training.

Water Resistance
up to 30 m