Polar Polar Heart Rate Strap T31/T34

At the heart of your training is the T31 transmitter. Its purpose is simple: to transmit your heart rate to your wrist unit or fitness equipment console. Slim and light, the ECG (electrocardiogram) accurate transmitter is fully waterproof and designed for all weather conditions.

- Built to last up to 2500 hours of training usage
- Prevents cross-talk from other electrical devices for accurate measurement of your training
- Non user replaceable battery
- Transfers heart rate information while swimming

Works with fitness equipment that is "Telemetry Chest Strap" compatible. Will not work with phones or equipment that require Bluetooth and ANT+ receivers.