Cablor Replacement USB Charging Cable for Fitbit Alta Smart Fitness Tracker with Reset Function,30cm, Purple An Extra Charger for Fitbit Alta Smart Fitness Tracker. Keep it fully charged and record your every step. Reset Function. Restart the device to solve many tiny problems easily, like it isn't tracking, or syncing, or responding normally. Safe Charging. It has a voltage regulator inside (PTC) to protect your fibit from being damaged by overcurrent. Fast & Convenient Charging. Plug it into any USB port on your computer to charge quickly and easily. Premium Quality. Made of high quality wire for durability. It can stand 1000+ times insertion-and-extraction tests.