Polar T31C Coded Transmitter

At the heart of your training is the Polar T31C Coded 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

• 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
• Compatible Products: FT80 G1, FT80, FT60 G1, FT60, FT40, FS3c, FS2c, FT2, FT1, CS400, CS300, CS200cad, CS100, CS100b, RS400sd, RS400