60beat heart rate monitor with chest strap: works with iPhones and android mobiles works Polar 5.3Khz chest strap App: 60 beat 60beat heart rate monitor with chest strap:works with iPhones and android mobilesworks Polar 5.3Khz chest strapApp: 60 beat turns your Mobile into a heart rate monitorworks with iPhones and other Android mobilesworks with Polar, and other 5Khz or 5.3KHz chest strapsApp: 60 beat or IPhone app on logyourrun.com 3.5mm headphone jack interface. Compatible with iphone compatible with many appsChest StrapsMobile Heart Rate Monitor now connects to your iPhone.Making sure your exercise is at the right level to maximize the benefits to meet your specific goal.Help focus your exercise in the Fat Burning, Aerobic or Anaerobic zonesSet your zones based on your Age, Max heart rate or your own settingsThe Manual section helps the user calculate their heart rate and determines the specific zone.Using  mobile heart rate monitor, the user gets continuous feedback on their heart rate.The application measures total time and the time in each heart rate zone. Perfect for running, walking, cycling, spinning .