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Amazon.com : Rhythm+2.0 Waterproof Heart Rate Monitor Armband - Optical Heart Rate Armband Monitor with Dual Band Radio ANT+ and Bluetooth Smart - Black : Sports & Outdoors
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Amazon.com : Rhythm+2.0 Waterproof Heart Rate Monitor Armband - Optical Heart Rate Armband Monitor with Dual Band Radio ANT+ and Bluetooth Smart - Black : Sports & Outdoors
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