Awinner Charging Clip for Fitbit Alta- Replacement USB Charger Adapter Charge Cord Charging Cable for Fitbit Alta Smart Fitness Watch (1-Pack) Replacement Charger for Fitbit Alta Smart Fitness Watch Make your Smart Watch charging become more convenient Compact and lightweight Design - Convenient for travelers and business users Power protection - Short circuit protection Please connect it to the USB port on the computer for charging. If you connect it to the adapter, the current must not exceed 1A.