Coiled Power Hot Sync USB Cable for the Garmin Forerunner 305 with both data and charge features - Uses Gomadic TipExchange Technology Specification: Cable length: (12 to 30 inches), Outer Shell Material: (Coiled PU), Internal Leads: 24AWG, TipExchange Connector Design (Garmin Forerunner 305 Specific) No additional AC power required. Uses power from the USB port of the computer to charge the Garmin Forerunner 305 Included TipExchange technology enables cable to be easily upgraded by simply switching the physical connector plug. Specific connection for the Garmin Forerunner 305 is included, with additional connectors for thousands of other devices available separately. Coiled cable can stretch when you need it and pack compactly when not in use. Combines two critical functions (e.g. data sync and charging) into one single accessory cable. Saves space, clutter and money.