Amazon.com: Fitbit Charge 3 Fitness Activity Tracker, Graphite/Black, one Size (no fitbit Warranty Support), 0.06 Pound : Sports & Outdoors
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Amazon.com: Fitbit Charge 3 SE Fitness Activity Tracker Graphite/White Silicone, One Size (S and L Bands Included),1 Count (Pack of 1) : Sports & Outdoors