Have the assurance of a full battery bar with the Dual USB Car Charger. Simply plug the charger into your car’s cigarette lighter to rapidly charge two USB powered devices such as a cell phone, PDA, MP3 player, iPhone® , iPod® or iPad® . This ultracompact and lightweight accessory automatically detects the device voltage needs.TWO USB POWER PORTS charge multiple devices such as a cell phone, PDA, MP3 player, iPhone® , iPod® or iPad®USES YOUR EXISTING USB CHARGING CORDSAUTO-DETECTS VOLTAGE NEEDSLED POWER INDICATOR confirms secure connection of charger