Konsait Black Replacement USB Charger Cable for Fitbit Charge HR Band Wireless Totally length: 27cm , Weight: 15g It has a PTC inside to Prevent Your Fitbit Charge HR from being damaged by overcurrent. Extra Replacement Charging Cable to Give Your Fitbit Charge HR Wristband a Boost in the office,at Home or in Travels. Quality Charge Cable with Voltage Regulator to Charge Your Fitbit Charge HR more Securely When Connected to USB Power Source on PC, Mac, Laptop or Notebook.