H1 heart rate sensor

Polar Pro Strap: Soft textile material, improved electrodes, slip-preventing silicone dots and a secure buckle

Slim and streamlined connector design

Easy-to-replace battery

5kHz coded transmission, compatible with most Polar products and compatible gym equipment in fitness clubs. Look for the Polar logo next time you go!

Transfers heart rate data while swimming with products which support 5kHz transmission.