Gomadic Intelligent Compact Car / Auto DC Charger suitable for the Garmin Nuvi 680 - 2A / 10W power at half the size. Uses Gomadic TipExchange Technology Intelligent circuit provides precise output voltage and resistor configuration specific to the Garmin Nuvi 680. This ensures battery is safely and efficiently charged without affecting battery longevity. Charger provides a full 10W (2,000mAh) of available current in a small form factor a little over 1 inch long. Flexible, straight cable measure 50 inches in total length. Gomadic TipExchange Technology protects your investment by providing a means to change/upgrade your charger by simply swapping the physical charging tip. (Charging tip for Garmin Nuvi 680) included with additional tips sold separately) Power Sleep"" feature will cut power draw of charger by over 99% when not in use. Charger will draw less than 0.1W of power when in ""ready state"" (e.g. not connected to the Garmin Nuvi 680). Built using high quality capacitors and circuit components to ensure that charging current does not interfere with FM radio transmissions. Rigorous Q&A process.