Plug PowerJolt Dual into your car's 12 volt accessory outlet, and then use the attached Lightning connector cable to charge your iPhone, iPad, or iPod touch. Plus, PowerJolt Dual gives you an open USB port. Use your own USB cable to charge other smartphones and tablets, at the same time. Both of PowerJolt Dual's charging ports deliver 12 watts of fast charging power with built-in circuit protection, ensuring no spikes and no blown fuses to replace. Griffin's thought of everything, down to the shape of the adapter that makes it easy to plug and unplug. Tech Specs 1.For automotive accessory outlets: 12 – 16 V DC 2.Power provided through Lightning connector: 12 W (5 V @ 2.4 A) 3.Power provided through USB port: up to 12 W (5 V @ 2.4 A)