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The Fitbit One clips onto clothing to track your movements. Since it's so small and lightweight, though, you should keep an eye on the gadget, as the clip can pop off unexpectedly.
Included with the Fitbit One is a silicone sheath with clip and USB Bluetooth adapter.
Outside of its sleeve, you can clearly see how it's easy to misplace the tiny Fitbit One.
The Fitbit One sports just one sole button. The key cycles through its various screens and kicks the gadget in and out of sleep mode.
One of the Fitbit One's skills is its ability to measure how many stairs you climb.