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Who needs a coach when you have the Polar USA RCX5 SD Run Heart Rate Monitor? The WearLink Hybrid Transmitter picks up signals from your heart and transfers them to the training computer, allowing you to analyze and optimize every aspect of your running and vastly improve your performance. Use the included Polar DataLink to download endurance training programs from and the Polar s3+ stride sensor to measure speed, distance, stride length, and cadence.

  • ZoneOptimizer coaches you to train at the right intensity
  • WearLink Hybrid Transmitter provides your heart rate even in the water
  • Race Pace helps you cross the finish line in time
  • Aside from providing stats, s3+ stride sensor determines your Running Index and is shock- and water-resistant
  • Polar DataLink is compatible with Macs and PCs
  • Up to 8-11 months of battery life eliminates the need for charging

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Here's what others have to say...


Pricey but ~

  • Familiarity:I've put it through the wringer

It does do everything in the world + built-in Fitness Test & Running Index to monitor improvement overtime. Water-resistant, tough, & runs on a normal watch-battery.

PS: I'm a sponsored Polar athlete, had to mention :)