Fitbit is a company based out of San Francisco, California United States that focuses on fitness and activity trackers. Many of the trackers are worn on the wrist like a bracelet. However, earlier models like the Fitbit One can clip onto pants or shirt lapels.

The trackers can sync to a Fitbit mobile app found on iOS, Android, Windows, and Windows Phone.

Fitbit trackers keep count of steps taken, length of nightly sleep, floors climbed, and distance traveled. Heart rate monitoring is also available in two models, the Charge HR and Surge. The range or products include the Zip, One, Flex, Charge, Charge HR, and Surge and range in price from $59 to $249. Fitbit also makes a 'smart scale' called Aria for keeping track of your weight (it syncs over Wi-Fi).

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