Always pack your toothbrush inside of a hard case in order to protect the bristles on your brush head. If you are traveling internationally, be sure to double-check both voltage (printed on the base of your toothbrush charging stand) and plug type. The U.S., Barbados, Canada, Costa Rica, and Mexico use 120-volt outlets with plug type A or B. Europe uses 220-240 volts with a two-pin plug type C and F in France, Germany, Italy, Portugal, and Spain, while the United Kingdom uses a type G. In general, Oral-B charging stations support 110-130 volts, which means you’ll need a step-down converter and a plug adapter. Sonicare charging stations support 100-240 volts, so you only need to worry about a plug adapter.