Intelligent Dual Purpose DC Vehicle and AC Home Wall Charger suitable for the Sandisk Sansa c250 - Two critical functions, one unique charger - Uses Gomadic Brand TipExchange Technology State of the art, advanced circuitry prevents the Sandisk Sansa c250 from being damaged by power surges, overcharging and/or short-circuiting. Broad input voltage range of 12-24VDC and 100-240VAC respectively. Permits charging via vehicle and home outlets worldwide! Intelligent circuit tailors precise output voltage (including resistor configuration) specific to the Sandisk Sansa c250. This ensures battery is safely and efficiently charged. Non-coiled, straight cable design allows for easy routing around your vehicle trim for a more professionally installed look. Durable construction is built to last. 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).