Advanced Rapid Wall AC Charger Compatible with Sony NWZ-A17 - Amazingly powerful home charge design built with Gomadic Brand TipExchange Power Sleep"" feature reduces vampire power draw 99%. Charger will consume less than 0.1W of power when in ""dormant state"" (e.g. not connected to the Sony NWZ-A17). Advanced state-of-the-art internal circuitry protects the Sony NWZ-A17 from power surges, overcharging, and short-circuiting, to significantly extend the internal battery lifecycle. Gomadic Powerful High Wattage wall charger for home or travel use. Customized circuit design is based on the latest in power regulation and is tailored to the precise output voltage and resistor ID requirements of the Sony NWZ-A17 (accurate to 0.1v!) Uniquely engineered in a small, lightweight, and highly portable design, the Gomadic Sony NWZ-A17 Wall Charger travels easily, saving both space and time. A quality product intended to be the last home/travel charger you ever buy! This product is backed by the Gomadic Lifetime Warranty.