This slim, light and waterproof T31 doesn?t have the benefit of coding for interference free transmission. However, its purpose remains the same: to transmit your heart rate to your wrist unit ECG (electrocardiogram) accurately.

…is key when training. That?s why Polar created the Polar WearLink?+ 31 coded transmitter belt. It not only measures your heart rate but also seamlessly adapts to your body shapes so you feel as if it?s not even there. The transmitter consists of an electrode strap and a connector, and with its new side…

This strap is compatible with T31 coded and non-coded chest transmitters and any T series exercise equipment.

Have an extra strap for when the other strap is in the wash, for another user or if your elastic strap is showing wear.

This slim, light and waterproof T31 Coded transmitter offers coding to prevent cross-talk from other electrical devices for accurate measurement of your training. ECG (electrocardiogram) accurate and built to last with up to 2500 hours of training usage.

At Polar we embrace wireless technology. In fact we pioneered its development and continue to further technology in the field to improve resolution and eliminate interference. The WearLink+ W.I.N.D. Transmitter Set is a result of that dedication. With a soft textile chest strap it?s the latest generation…

The most practical way of measuring your cycling session is with our advanced wireless cadence sensor. It measures your pedaling rate as revolutions per minute in real time and average time so you can compare the technique of your ride against previous rides.