Fitbit Flex cable, Replacement Fitbit USB Charger Cable + 500mA AC Wall Charger Adapter for Fitbit Flex Band Wireless Activity Bracelet by FimiTech Great replacement with fully functional just like the original charging cable Made From TPE and Copper Material with Charging Protection Function The plug has an intelligent chip inside, charging with automatic protection function Designed with compact and lightweight features, 100-240 volt input and portable plug ideal for your travel Quality Charge Cable with Voltage Regulator to Charge Your Fitbit Flex more Securely When Connected to USB Power Source