Includes two detachable must-have cables: a USB-to-USB mini charge cable for USB charging devices and a charge/sync cable for iPod models with full-sized dock connector. The included adapters make it possible to charge, power, and play your device inside buildings, trains, planes, or automobiles--anywhere you can plug in! Able to automatically handle 110- to 240-volt electric service, the PowerDuo even protects your device from overcharging and power surges with a replaceable fuse.