Xiemin Replacement USB Charger Charging Cable for Fitbit Charge HR Sports Wireless Activity Tracker Wristband Black Smart charging cable that protects your device from over voltage, over current and over temperature. Intelligent Chip designed that can control the electrical output and protect your Fitbit Charge HR in peace. Special designed charging connector makes you plug it in your device Go-as-you-please. Comes with a free clasp for your Fitbit Charge HR.