![Amazon.com: Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Black/Black, 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, Black/Black, One Size (S &L Bands Included) : Sports & Outdoors](https://m.media-amazon.com/images/I/91Bq1bnhcVL._CR2,0,1276,720_SR342,193__BG0,0,0__QL65_.png)
Amazon.com: Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Black/Black, One Size (S &L Bands Included) : Sports & Outdoors
![Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Black, Small (US Version), 1 Count : Sports & Outdoors Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Black, Small (US Version), 1 Count : Sports & Outdoors](https://m.media-amazon.com/images/I/81cp0NTn-EL._AC_SL1500_.jpg)
Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Black, Small (US Version), 1 Count : Sports & Outdoors
![Amazon.com: Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Black/Black, 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, Black/Black, One Size (S &L Bands Included) : Sports & Outdoors](https://m.media-amazon.com/images/S/aplus-media/vc/dff88104-9bb5-4ef2-8f86-70658f21bb5f.__CR0,0,1464,600_PT0_SX1464_V1___.jpg)