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Thin, light, and spartan

The only indicator on the Fitbit Flex is a small array of LED lights. You tap the screen to illuminate them and to initiate sleep tracking mode.

Updated:Caption:Photo:Sarah Tew/CNET
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A full kit

Included in the Fitbit Flex box is the tracker module, a USB cord for charging, a flexible wristband, and a USB Bluetooth adapter.

Updated:Caption:Photo:Sarah Tew/CNET
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This case is flexible

The tracker module for the Fitbit Flex fits into a pouch on the soft wristband.

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Pop that band

Removing the tracker is just a matter of popping open the wristband's pouch.

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Wrap it around

Wrap the Fitbit Flex's strap around your wrist and fasten its bindings to ensure a secure fit.

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Comfy yet ready for action

It takes a little doing, but once the Flex's strap is attached, the device stays put.

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This tracker sure is tiny

The Fitbit Flex's main tracker unit is the smallest Fitbit device yet.

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Its own Bluetooth network

Once you connect the bundled USB Bluetooth adapter to a PC or Mac, the Flex can enjoy its own private Bluetooth network.

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Just charge the tracker

To charge the Fitbit Flex's battery, you must remove it from the strap and then place it with its USB cable charger.

Updated:Caption:Photo:Sarah Tew/CNET
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