Built with industry grade materials and premium circuitry. Power up phones, tablets and USB mobile devices from your car using your mobile device’s USB cable. Fast power charges without a computer. Small and light enough for travel and great for long trips or daily commuting. Rapid charge without risk of short circuits. Comes with a separate USB data charging cable. 1 Amp power output. Compatible with iPhone 4G/ iPhone 4S/iPhone 3GS/ iPhone 3G/ iPad 1/ iPad 2/ iPad 3.