fitbit is an American consumer electronics and fitness company. It produces wireless-enabled wearable technology, physical fitness monitors and activity trackers such as smartwatches, pedometers and monitors for heart rate, quality of sleep and stairs climbed as well as related software.
The company was founded as Healthy Metrics Research, Inc. in San Francisco, California, on March 26, 2007. In October 2007, it changed its name to Fitbit, Inc. In January 2021 the company was acquired by Google.

USER MANUALS for FITBIT fitness trackers