You can buy a universal adapter to charge almost anything, simply find the connector type and wattage.
The Philips Norelco 7310XL Men's Shaving System is a high rated shaver by Norelco. On top of that it is affordable too.
It should probably last about a couple months.
Dual voltage means it will operate safely with either 110/120V or 220/240V and all you need to operate it overseas is an electric adapter plug.