View accurate heart rate information on all Polar training products (uses both 5kHz and 2.4GHz W.I.N.D. transmission for maximum compatibility)

Put it in your gym bag. 5kHz coded transmission also allows you to see real-time heart rate on compatible gym equipment. Look for the Polar logo!

Transfers heart rate information while swimming with products which support 5kHz transmission*

New improved user-replaceable battery mechanism



  • H2 heart rate sensor