Cablor Replacement USB Charger Charging Cable for Fitbit Charge HR Wireless Activity Wristband-31cm,Black Extra Charger for Fitbit Charge HR. Keep your fitbit always fully charged. Note: this is only designed for Fitbit Charge HR, not for other models. Convenient Charging. Simply plug it into any USB port on your computer to charge quickly and easily. Safety Protection. It has a voltage regulator to protect your Fitbit Charge HR from being damaged by overcurrent. 100% New and High Quality. Certified by FCC and RoHS, it can stand 1000+ times insertion-and-extraction tests, offering you reliable durability. Fast Charging Speed. Made of high quality wire, it provides fast charging speed with stable performance.