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You bike for the fun of it, but optimizing your fitness results with the Polar RCX3 Bike Heart Heart Monitor can make you downright giddy. Optimize your time and get more bang for your buck, find out when to rest or when to push harder, track your progress, and even count calories to fine-tune that bod. You don't have to aspire to go pro to get the benefits of a smarter workout.

  • ZoneOptimizer finds the exact training effect you seek by adjusting five heart rate training zones to your current physiological condition
  • Training Benefit gives instant feedback following a workout, for immediate satisfaction and motivation and Smart Fitness Test gives progress reports so you can keep up to date on your improvement 
  • Training Load helps you find the balance between rest and training by advising when to do either
  • Smart Calories uses OwnCal to calculate calories expended depending on age, weight, height, gender, HRmax, and training intensity
  • CS Speed Sensor WIND easily attaches to your bike to measures your current, average and maximum speeds and tracks your average speed over many rides so you can to watch your performance improve
  • New H3 soft textile strap has the sensors embedded in the fabric for a better fit and more comfortable feel
  • Watch features include time of day with alarm and snooze, dual time zone, date and weekday indicator, stopwatch, reminders and low-battery indicator
  • Displays text in English, German, French, Spanish, Portuguese, Italian, Dutch, Danish, Finnish, Norwegian or Swedish
  • Water-resistant to 30m (100 ft)
  • Battery is user-replaceable; includes low-battery indicator so you never get caught mid-workout with a dead watch
  • White version has a slender design with a narrow strap and silicone wristband

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