Advanced Rapid Wall AC Charger Compatible with Plantronics M50 - Amazingly powerful home charge design built with Gomadic Brand TipExchange Advanced state-of-the-art internal circuitry protects the Plantronics M50 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 Plantronics M50). 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 Plantronics M50 (accurate to 0.1v!) Specification: Input Voltage (100 - 240vAC), Cable length (50 inches), Transformer Dimensions (2.0 X 1.75 inches), Foldable Adapter (Yes), Circuit Design (Plantronics M50 Specific) Uniquely engineered in a small, lightweight, and highly portable design, the Gomadic Plantronics M50 Wall Charger travels easily, saving both space and time.