Using a charger of more than 45 W allows for charging three batteries at once while using a charger of less than 45 W can only charge two batteries simultaneously

it offers maximum versatility for capturing photo and video of fast action

Training load focus

Using both adjustable magnetic resistance and dynamic air resistance allows for highly modular workouts that can be modified to fit your lifestyle/fitness level

Fitbit Charge 6 Advanced Fitness & Health Tracker, Coral w/ 2 YR Warranty Bundle ArmorAll Using a charger of moreFitbit Charge 6 Tracker Product Feature Heart rate on gym equipment Connect Charge 6 to your favorite compatible exercise machine and see your real time heart rate directly on the display. Compatible with select workout machines that support the Bluetooth Heart Rate Profile, and coming soon to more. See here for more information on Charge 6 compatible machines. Daily Readiness Score Find out if your body's ready to work out or needs time to recover.