Get set for success all in one step with Fitbit Aria FB201B a Wi Fi Smart Scale that uses advanced technology to track weight, lean mass, body fat percentage and BMI, so you can see the numbers you need to take control of your fitness and get results that last. Short term fluctuations in weight don't give you a realistic picture of your health and fitness. It's the long term trends that matter. That's why Aria syncs with your Fitbit dashboard to display charts and graphs of your progress, so you can see the bigger picture and stay on track.