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Irregular Rhythm
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Amazon.com: Fitbit Luxe Wellness & Fitness Tracker (Black/Graphite) with Heart Rate Monitor, Sleep Tracker, Bundle with 2 Watch Bands, 3.3foot Charge Cable, Wall Adapter, Screen Shield & PremGear : Sports & Outdoors
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Fitbit Charge 5 Fitness tracker, GPS (satellite), AMOLED, Touchscreen, Heart rate monitor, Activity monitoring 24/7, Waterproof, Bluetooth, Black/Graphite
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/cdn.vox-cdn.com/uploads/chorus_image/image/66884174/Fitbit.0.jpg "The FitBit Alta HR helped me monitor my heart rate. I never want to see it again. - Vox")