Mini 10W Car / Auto DC Charger designed for the Cowon J3 with Gomadic Brand Power Sleep technology - Designed to last with TipExchange Technology 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. Intelligent circuit provides precise output voltage and resistor configuration specific to the Cowon J3. This ensures battery is safely and efficiently charged without affecting battery longevity. 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 Cowon J3) included with additional tips sold separately) Built using high quality capacitors and circuit components to ensure that charging current does not interfere with FM radio transmissions. Rigorous Q&A process. Uses latest state of the art advancements in charging and surge suppression technologies to deliver a unique product in an unbelievably micro-sized form factor.