Specially designed for Garmin Fenix 3 HR and other compatible models of intelligent health sports watches. High-quality interface helps prevent oxidation and enables efficient transmission. Constructed with high-quality metal material for strong tensile strength. Features multiple protection technologies, including short-circuit, overload, and overvoltage protection. Offers low DC ripple, high working efficiency, and fast charging speed. Supports data transmission between the watch and computer when connected via the included USB cable. Input voltage: 5V. Output voltage: 5V. Output current: 700mA. Interface: probe interface. Weight: 55g. Cable length: 100cm / 39.4in. Dimensions: 56x45x15mm / 2.6x1.8x0.6 inch. Compatible models: Garmin Fenix 3, Fenix 3 HR, Fenix 3 Sapphire, Quatix 3, Tactix Bravo. Charging instructions: Use a charging head with output within 1A; do not use a mobile phone fast charging head. For most stable charging, it is recommended to use a computer USB port. Attach the watch to the dock in the correct direction as shown in the image; incorrect placement may damage the device. Color: Black. Material: ABS. Package includes: 1 x Adapter Dock. Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3cm.