Compatible with Polar:
CS100s, CS200s, CS300s, CS400s, FS2s, FS3s, FT1s, FT2s, FT4s, FT7s, FT40s, FT60s, FT80s, RS100s, RS300s, RS400s (call for any other models not displayed)
Sizing Choices: Measure just under the breasts/chest area
Med/XXL (30-45 Inches)
Polar WearLink+ transmitter Nike+ picks up your heart�s signals and transfers that data into the Nike+ system. The soft textile chest strap seamlessly adapts to your body shape, bringing full freedom of movement to your training. With its hook mechanism, transmitter is just as quick to put on as it is to take off.
Provides heart rate information to nikeplus.com web service with compatible Nike+ devices
Uses coded 5 kHz transmission, ensuring that your Polar training computer finds your heart rate signal
Washable fabric strap
Water-resistant connector
User replaceable battery