Specially designed for Garmin Fenix 3 HR and other compatible models of intelligent health sports watches. High-quality interface helps prevent oxidation and ensures more efficient transmission. Constructed with high-quality metal material for strong tensile strength. Multiple protection technology provides short-circuit, overload, and overvoltage protection. Features low DC ripple, high working efficiency, and fast charging speed. Enables data transmission between the watch and computer when connected via the included USB data 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 within 1A output; avoid using mobile phone fast charging adapters. For best results, use a computer USB port for stable charging. Attach the watch to the dock in the correct direction as shown in the image; incorrect alignment may damage the device. Color: Black. Material: ABS. Package includes: 1 x Adapter Dock. Other items not included. Note: Lighting and display differences may cause slight color variations between the image and actual product. Measurement may vary by +/- 1-3cm.