Polar z-t31_coded Details
Polar Accessories T31C Coded Transmitter
At the heart of your training is the coded T31. 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
* Built to last with up to 2500 hours of training usage
* Prevents cross-talk from other electrical devices for accurate measurement of your training
