Getwow(TM) [3-Pack] Replacement USB Charging Charger Cable Cord for Fitbit Flex Band Wireless Activity Bracelet Compatible with: Replacement charging station only compatible with Fitbit Ionic Smart Watch. Simple and Convenient: Special charging station design makes your smart watch charging more simple and convenient, and no need to separate the tracker out any more. More Lasting Lifespan: The strict quality inspection makes the charger more durable. High quality and special material: Anti-slip material on the bottom of the charging station to support your smart watch more stable. 18 Months Warranty: Hassle free replacement or money back during the warranty.