PowerJolt sports a low-profile plug for your car's 12 volt outlet and two powerful 5 watt charging circuits to power up your iPhone or iPod quickly. Self-resetting SmartFuse circuit protection means no blown fuses to replace. Use the included dock cable to plug your iPhone or iPod into either of PowerJolt Dual's two USB ports. Use the other port to charge something else at the same time. PowerJolt Dual Micro provides fast charging for almost any device that charges via a standard USB connector.