Gomadic Intelligent Compact AC Home Wall Charger suitable for the Sony Walkman NWZ-A815 - High output power with a convenient, foldable plug design - Uses TipExchange Technology 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 Walkman NWZ-A815). Advanced state-of-the-art internal circuitry protects the Sony Walkman NWZ-A815 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 Walkman NWZ-A815 (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 Walkman NWZ-A815 Wall Charger travels easily, saving both space and time.