Hackernews posts about Fitbit

Fitbit is a pioneering wearable device company that was acquired by Google in 2019 and specializes in producing fitness trackers and smartwatches designed to track daily activity, exercise, sleep, and nutrition.

Related: Google  
  1. NuttX RTOS at FitBit [pdf] (events.nuttx.apache.org)
  2. Fitbit Time Is Wrong (community.fitbit.com)