iMarku USB Cable for Fitbit Charge HR Band Wireless, Black, 2pcs Authentic Charger for Fitbit Charge HR Fitness Wireless Activity Wristband Different from other unauthentic poor quality charging cables, it has a PTC inside to prevent your Fitbit Charge HR from being damaged by overcurrent Its fully functional just as the original cable. Fits perfectly for your Fitbit Charge HR Fitness Wireless Activity Wristband Made of ROHS materials. Premium quality guaranteed