$42.99 difference between the fitbit charge 
Fitbit Charge 4 | Advanced Fitness Tracker
Apple Watch 3 vs. Fitbit Charge 4 
difference between fitbit charge 3 and charge 4
difference between fitbit charge 3 and charge 4
difference between fitbit charge 3 and charge 4
difference between fitbit charge 3 and charge 4
difference between fitbit charge 3 and charge 4
difference between fitbit charge 3 and charge 4