Gomadic High Output Home Wall AC Charger designed for the Sony NW-A20 / NW-A25 / NW-A26 / NW-A27 with Power Sleep technology - Intelligently designed with Gomadic TipExchange Advanced state-of-the-art internal circuitry protects the Sony NW-A20 / NW-A25 / NW-A26 / NW-A27 from power surges, overcharging, and short-circuiting, to significantly extend the internal battery lifecycle. 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 NW-A20 / NW-A25 / NW-A26 / NW-A27). 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 NW-A20 / NW-A25 / NW-A26 / NW-A27 (accurate to 0.1v!) Foldable wall outlet plug makes for a very compact, portable design. Advancements in power circuit miniaturization now gives you an amazingly powerful charger for its size. Uniquely engineered in a small, lightweight, and highly portable design, the Gomadic Sony NW-A20 / NW-A25 / NW-A26 / NW-A27 Wall Charger travels easily, saving both space and time.