This USB charging dock is a reliable replacement or backup for your Amazfit smartwatch. It ensures safe, efficient charging with overcurrent and short-circuit protection. The compact design and strong magnetic contact make it easy to use and convenient to carry anywhere. Main Features Designed for Huami Amazfit GTR 3, GTR 4, and GTR 3 Pro Also compatible with Amazfit GTS 3, GTS 4, and T-Rex 2 USB interface for universal power input Secure magnetic connection for stable and fast charging Lightweight and portable for home, office, or travel Specifications Compatibility: Huami Amazfit GTR 3 Huami Amazfit GTR 3 Pro Huami Amazfit GTR 4 Huami Amazfit GTS 3 Huami Amazfit GTS 4 Huami Amazfit T-Rex 2 Interface: USB Cable Length: Approx. 100 cm Charging Method: Magnetic Contact Material: ABS + TPE Input Voltage: 5V Output Current: 500–1000mAh (varies by device)