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Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Black/Black, One Size (S &L Bands Included) | Amazon price tracker / tracking, Amazon price history
Hugues Severac on Twitter: "Actually first Fitbit was 2008 “@SAI: The entire history of the smartwatch and fitness-band http://t.co/sIG7lHNk6n http://t.co/YUu1oaORqy”" / Twitter
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