Hama 00093731: Mini USB Charger:

This power supply unit is specially designed for navigation devices with a mini USB connector. Use it to conveniently charge your navigation device without needing a PC or laptop. The Hama power supply unit can also be used with other mini USB devices.

For navigation devices, follow the instructions in your device's operating manual and proceed as follows:

1. Connect the switched-off navigation device to the power supply unit with the correct polarity.
2. Plug the power supply unit into the cigarette lighter socket.
3. Now switch on your navigation device to use it.