![Amazon.com: Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Rosewood/Rosewood, One Size (S &L Bands Included) : Sports & Outdoors Amazon.com: Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Rosewood/Rosewood, One Size (S &L Bands Included) : Sports & Outdoors](https://m.media-amazon.com/images/I/31ngaLjEzLS.jpg)
Amazon.com: Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Rosewood/Rosewood, One Size (S &L Bands Included) : Sports & Outdoors
![Amazon.com: Hamile Bands Compatible with Fitbit Charge 4 / Fitbit Charge 3 / Fitbit Charge 3 SE, Waterproof Replacement Watch Strap Fitness Sport Band Wristband for Women Men, Small, White : Electronics Amazon.com: Hamile Bands Compatible with Fitbit Charge 4 / Fitbit Charge 3 / Fitbit Charge 3 SE, Waterproof Replacement Watch Strap Fitness Sport Band Wristband for Women Men, Small, White : Electronics](https://m.media-amazon.com/images/I/61EW9jWIHQL.jpg)
Amazon.com: Hamile Bands Compatible with Fitbit Charge 4 / Fitbit Charge 3 / Fitbit Charge 3 SE, Waterproof Replacement Watch Strap Fitness Sport Band Wristband for Women Men, Small, White : Electronics
![Class Action Alleges Certain Fitbits Fail to Accurately Gauge Blood Oxygen Levels of Users with Darker Skin Class Action Alleges Certain Fitbits Fail to Accurately Gauge Blood Oxygen Levels of Users with Darker Skin](https://www.classaction.org/media/fitbit-1.jpg)
Class Action Alleges Certain Fitbits Fail to Accurately Gauge Blood Oxygen Levels of Users with Darker Skin
![Fitbit rolls out SpO2 blood oxygen monitoring feature: How it works, use cases and more | Technology News - The Indian Express Fitbit rolls out SpO2 blood oxygen monitoring feature: How it works, use cases and more | Technology News - The Indian Express](https://images.indianexpress.com/2020/01/Fitbit_759.jpg)