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Amazon.com : Polar Vantage V Titan - Sports Watch with HRM H10 Chest Strap for Multisport and Triathlon Training with GPS, Heart Rate Monitor, Waterproof : Sports & Outdoors
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Amazon.com : POLAR VANTAGE M –Advanced Running & Multisport Watch with GPS and Wrist-based Heart Rate (Lightweight Design & Latest Technology), White, Small : Sports & Outdoors
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