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
Polar T31 Coded Transmitter Features:
Built to last with up to 2500 hours of training usage
Prevents cross-talk from other electrical devices for accurate measurement of your training
Buy Polar T31 Coded Transmitter from Chain Reaction Cycles, the World’s Largest Online Bike Store.