Accessories for heart rate monitors and mobile apps

Enhance your training experience and achieve a more complete understanding of your performance. With Polar accessories you can upgrade your heart rate monitor or mobile application.

Select your product and find out which one is most suitable for your training.

Heart rate sensors

At the heart of your training is the coded T31 transmitter. Its purpose is simple: to transmit your heart rate to your wrist unit. Slim and light, the ECG (electrocardiogram) accurate transmitter is fully water resistant and designed for all weather conditions