Fitbit fitness trackers up to 40% off: Flex 2 $60, Alta $100, Charge 2 $130, more
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Amazon.com: Extender Band for Compatible with Fitbit Flex/2 Fitbit Alta HR Fitbit Luxe Fitbit Inspire 3 or Garmin Vivosmart 4 Watch Band, Band Extender for Larger Wrist or Ankle Wear (Black) : Electronics