Fitbit force/ Charge charger cable 
It is portable for you to charge for your Fitbit Force/Charge model. 
Compatible with Fitbit Force / Charge wireless band 
(Not fit for Fitbit Charge HR / Surge) 
Note:Only for charging, no RESET function 
Package Included: 
1 x Charging cable 
To charge your Force, plug the charging cable into a USB port or UL-certified USB wall charger and plug the other end into the port on the back of the Force. 
A battery icon on the display will show the charging progress. 
Charging completely averages an hour and a half