Uses coded 5kHz transmission to connect with the majority of Polar products and compatible gym equipment in fitness clubs;It not only measures your heart rate but also seamlessly adapts to your body shape;Soft textile material feels like clothing on the skin;Slim and streamlined connector design;New improved user-replaceable battery mechanism

• Polar H1 Heart Rate Sensor Belt - Black, Size - M-XXL
• M-XXL
• Black

Polar H1 Heart Rate Sensor Belt - Black, Size - M-XXLPolar