Gomadic Intelligent Compact AC Home Wall Charger suitable for the Garmin StreetPilot C340 - High output power with a convenient, foldable plug design - Uses TipExchange Technology Advanced state-of-the-art internal circuitry protects the Garmin StreetPilot C340 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 Garmin StreetPilot C340 (accurate to 0.1v!) 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 Garmin StreetPilot C340). 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. Specification: Input Voltage (100 - 240vAC), Cable length (50 inches), Transformer Dimensions (2.0 X 1.75 inches), Foldable Adapter (Yes), Circuit Design (Garmin StreetPilot C340 Specific)