Getting Started with Fitbit Flex

Here is step by step guide getting started using Fitbit Flex.

What’s included on Your Box

Your Fitbit Flex Wireless Activity + Sleep Wristband box includes:

  • Flex tracker
  • Charging cable
  • Wireless sync dongle
  • 1 small and 1 large wristband


How to put on your Flex

Choosing your wristband

Your Flex comes with a large and a small wristband. Choose the wristband that fits most comfortably on your wrist. If you choose the small wristband, please note you’ll need to remove the clasp from the large wristband and put it into the small wristband.

Removing the clasp

Push the clasp out with one thumb from the inside of the wristband, then pull out the clasp.

Putting the clasp in securely

Insert the clasp into the wristband and press a few times with both thumbs to ensure that the clasp is flat and in line with the wristband.

NOTE: If there is a bulge on the inside of the band between the two inside prongs of the clasp, find a small object like a credit card to push it flat.

Inserting the tracker

Hold the tracker in your hand with the grey arrow facing up. Insert this end into the wristband, with the arrow pointing toward the holes in the wristband.


How to secure your wristband

  1. Put on the wristband so the window of lights are closest to the outside of your wrist and facing you.
  2. Align both ends of the wristband so they are directly overlapping each other with the clasp over the two holes that best fit your wrist.
  3. Squeeze both the clasp and the wristband between your thumb and forefinger until you hear a click.

You’ll know your Flex wristband is securely fastened if both ends of the wristband are fully inserted.

NOTE: If you’re having trouble, try securing the wristband off your wrist to get a feel for how it securely clasps and then try again on your wrist.

Care and wearing tips

Keep the following tips in mind when caring for your Flex:

  • Clean and dry the Flex regularly, particularly under the band.
  • Wear your Flex band loosely enough to allow air circulation.
  • Use skin care products sparingly on the areas of the wrist covered by the Flex.
  • If you notice any signs of skin irritation or experience any discomfort, please discontinue use.

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