Slim, light and fully water resistant transmitter that prevents cross-talk from other electrical devices for accurate measurement.
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
No user replaceable battery
Transfers heart rate information while swimming