Features: Compatible with: This charger compatible with Fitbit Charge 3 & Charge 4 activity tracker.Not fit for Charge 2, Charge 1st or any other model Premium & Speedy: The Charge 3 & Charge 4 charging cable is made of high quality wire, provides a stable performance and a fast charging, about an hour a full charge. Safe Protection: The charger cable built in smart chip, protect your Charge 3 from over-current, over-voltage, over-circuit protection, offers a safe environment for charging. Convenient and Easy to Use: To get a boost charging just plug it into USB port on your PC, laptop, notebook, wall charger or car charger. Geting a better experience, we suggest you to use the recommended adapter (5V 1A). Package includes: 2 x 3.3ft/100cm Chargers for Charge 3 & Charge 4 (watch is not included). Charger Compatible with Fitbit Charge 3 & Charge 4 Activity Tracker Compatibility: Compatible with Fitbit Charge 3 Compatible with Fitbit Charge 4 Specification: Color: Black Input: 5V/0.5~1A Length: 1m/3.3ft Package included: 2 x 3.3ft/100cm Charger for Charge 3 (smart watch is not included) Friendly Reminder: 1. We suggest using the computer, laptop or power bank to charge as the current is more stable. 2. Do not use power source which is above 5V/1A to charge, it may damage your watch