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AHA: Fitbit shows it can track down atrial fibrillation in 450,000-strong heart study | Fierce Biotech
![Amazon.com: Fitbit Charge 3 SE Fitness Activity Tracker Graphite/White Silicone, One Size (S and L Bands Included),1 Count (Pack of 1) : Sports & Outdoors Amazon.com: Fitbit Charge 3 SE Fitness Activity Tracker Graphite/White Silicone, One Size (S and L Bands Included),1 Count (Pack of 1) : Sports & Outdoors](https://m.media-amazon.com/images/I/71jQaHrVJmL._AC_UX522_.jpg)
Amazon.com: Fitbit Charge 3 SE Fitness Activity Tracker Graphite/White Silicone, One Size (S and L Bands Included),1 Count (Pack of 1) : Sports & Outdoors
![The screen on my charge 3 went black for three days and I tried to restart it but it wouldn't work. I let it charge for quite a while and then did The screen on my charge 3 went black for three days and I tried to restart it but it wouldn't work. I let it charge for quite a while and then did](https://preview.redd.it/zmo2gk5rdqi41.jpg?auto=webp&s=ac2a064e1b26f02d3e9c3370aa635935e49aa8b3)