Unique Gomadic Car and Wall AC/DC Charger designed for the Plantronics Voyager 520 &ndash; Two Critical Functions, One Great Charger (includes Gomadic TipExchange) Broad input voltage range of 12-24VDC and 100-240VAC respectively. Permits charging via vehicle and home outlets worldwide! State of the art, advanced circuitry prevents the Plantronics Voyager 520 from being damaged by power surges, overcharging and/or short-circuiting. Intelligent circuit tailors precise output voltage (including resistor configuration) specific to the Plantronics Voyager 520. This ensures battery is safely and efficiently charged. Gomadic TipExchange Technology protects your investment by providing a means to change/upgrade your charger by simply swapping the physical charging tip. (Charging tip for Plantronics Voyager 520 included with additional tips sold separately) A best-selling product from Gomadic Corp, one of the leaders in consumer electronic charging accessories.