![Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Teal, Large (US Version) : Sports & Outdoors Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Teal, Large (US Version) : Sports & Outdoors](https://m.media-amazon.com/images/I/81COjc+fT0L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Teal, Large (US Version) : Sports & Outdoors
We review the Fitbit Versa smartwatch: what do a marathon runner and weightlifter think? | South China Morning Post
![Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Special Edition, Lavender Rose Gold, Large (US Version) : Sports & Outdoors Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Special Edition, Lavender Rose Gold, Large (US Version) : Sports & Outdoors](https://m.media-amazon.com/images/I/81NTsemJsLL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Fitbit Charge 2 Heart Rate + Fitness Wristband, Special Edition, Lavender Rose Gold, Large (US Version) : Sports & Outdoors
![Has anyone seen their Cardio Fitness Heart Rate improve while using the Fitbit? Or has anyone worked to improve it and seen results? (I have attached a picture for an example/clarity) : Has anyone seen their Cardio Fitness Heart Rate improve while using the Fitbit? Or has anyone worked to improve it and seen results? (I have attached a picture for an example/clarity) :](https://i.redd.it/tk1333va2ab11.jpg)