Griffin's PowerJolt sports a low-profile plug for your car's 12 volt accessory outlet, and a powerful 10 watt 2.1Amp charging circuit so your mobile devices and smartphones can power up quickly and safely. Plugs are small and easy to grip, and able to fit in even the most restrictive of ruggedizes cases, including Griffin's own Survivor cases.With its built-in, self-resetting SmartFuse, PowerJolt guards against power fluctuations as it charges.