Polar T31 Coded Chest Transmitter and Elastic Strap
The Polar T31 Coded Transmitter is Slim, light and waterproof all while transmitting your heart rate to your wrist unit ECG (electrocardiogram) accurately.
Coding prevents cross-talk from other electrical devices and The Polar T31 Coded Transmitter delivers 2,500 hours of operation, estimated at 2-5 years of use based on exercising 10 hours a week.
The T31 coded is great for swimmers - it is fully water resistant making them the most effective exercise tools for measuring your heart rate while involved in water sports.
The T31 coded transmitter does not have a user replaceable battery and must be entirely replaced when the battery is depleted. We recommend the Polar H1 Transmitter for those looking for user replaceable batteries.
Chest Strap Sizing
- XS (18 to 25 inches)
- Small (23 to 47 inches)
- Medium (25 to 54 inches)
- Large (33 to 63 inches)
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