Gomadic USB Charging Data Coiled Cable designed for the Garmin Montana 680 / 680t Will charge and data sync with one unique TipExchange enabled cable No additional AC power required. Uses power from the USB port of the computer to charge the Garmin Montana 680 / 680t Included TipExchange technology enables cable to be easily upgraded by simply switching the physical connector plug. Specific connection for the Garmin Montana 680 / 680t is included, with additional connectors for thousands of other devices available separately. Specification: Cable length: (12 to 30 inches), Outer Shell Material: (Coiled PU), Internal Leads: 24AWG, TipExchange Connector Design (Garmin Montana 680 / 680t Specific) Combines two critical functions (e.g. data sync and charging) into one single accessory cable. Saves space, clutter and money. Coiled design is the ideal compromise between durability and compactness. Quality 24AWG lead data lines maximize both charging and data speeds.