![Amazon.com: Fitbit Charge HR Wireless Activity Wristband (Black, Large (6.2 - 7.6 in)) : Sports & Outdoors Amazon.com: Fitbit Charge HR Wireless Activity Wristband (Black, Large (6.2 - 7.6 in)) : Sports & Outdoors](https://m.media-amazon.com/images/I/51wafNtYODL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Fitbit Charge HR Wireless Activity Wristband (Black, Large (6.2 - 7.6 in)) : Sports & Outdoors
![Amazon.com: Fitbit Charge HR Wireless Activity Wristband (Pink, Small (5.4 - 6.2 in)) : Sports & Outdoors Amazon.com: Fitbit Charge HR Wireless Activity Wristband (Pink, Small (5.4 - 6.2 in)) : Sports & Outdoors](https://m.media-amazon.com/images/I/711vnovw+xL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Fitbit Charge HR Wireless Activity Wristband (Pink, Small (5.4 - 6.2 in)) : Sports & Outdoors
![The Wall Street Journal on Twitter: "A side-by-side comparison of the Fitbit Charge HR, Jawbone Up3 and Apple Watch Sport: http://t.co/IereK1QIaB http://t.co/XovxG9wcSC" / Twitter The Wall Street Journal on Twitter: "A side-by-side comparison of the Fitbit Charge HR, Jawbone Up3 and Apple Watch Sport: http://t.co/IereK1QIaB http://t.co/XovxG9wcSC" / Twitter](https://pbs.twimg.com/media/CDvRy5gW0AAPToo.jpg)
The Wall Street Journal on Twitter: "A side-by-side comparison of the Fitbit Charge HR, Jawbone Up3 and Apple Watch Sport: http://t.co/IereK1QIaB http://t.co/XovxG9wcSC" / Twitter
![A few quick thoughts on Fitbit's new activity trackers, GPS watch (with optical heart rate!) | DC Rainmaker A few quick thoughts on Fitbit's new activity trackers, GPS watch (with optical heart rate!) | DC Rainmaker](https://media.dcrainmaker.com/images/2014/10/Fitbit-New-Products-Image.png)