Universal USB car charger; charges batteries of MP3 players, mini iPods, digital cameras, Bluetooth headsets, and other USB devices. Plug the adapter into the cigarette lighter socket and connect the device to be charged. Supports all rechargeable MP3 players with a USB interface (including iPods). Precautions: Protect from moisture. Also, follow the charging instructions provided by the USB device manufacturers. Please do not use the charger for devices that require more than 1000 mA charging current; these devices are usually charged with an additional charger.