Polar T31 Coded Transmitter,Black,M

Amazon

Transmits heart rate data to Polar heart rate monitors using 5kHz transmission and compatible gym equipment, compatible heart rate monitors include, but are not limited to: FT1, FT2, FT4, FT7, FT40, FT60, FT80, RS100, RS300X, RS400, RCX5 Compatible products: Elastic straps, individually coded to pick up your heart rate monitor and not others nearby, this eliminates cross-talk with other electronic devices in the same area Slim, lightweight, and waterproof design Fits 25 to 54 inch chest size Average battery lifetime is 2500 hours of use, non user replaceable battery

Workout for Less

At the heart of your training is the coded Polar 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.