Fitness Tracker, which records steps and motion , is classified under HS 903180 .

If the Fitness Tracker makes use of a three axis accelerometer to record not only a user’s steps, but motion as well. It uses this information to determine how many calories are being burned by the wearer. It uses the built-in accelerometer to track the user’s movement in three dimensions, and attempts to calculate the number of calories burned from this information. Then it is classified under  HS 903180 .