Nike has offered the Nike+ training system that is compatible with some of its shoes and Apple iPods for a while now. The system tracks information about your workout, but has lacked important data like heart rate.
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Nike has teamed up with Polar to offer a new heart rate monitor that is on a chest strap and wraps around the users chest. The system works with the Apple Nike+ apps on the iPhone and can track heart rate information for you. The system is also compatible with all Polar heart rate equipment at the gym.
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The Polar WearLink+ for Nike+ will be available starting this month in the US for $69.99. The strap can survive sweat, rain, and splashed but is not suitable for swimming.