Review on Braun Oral B Electric Toothbrush Charger Power Cord: Replacement Inductive Charging Base (3757 3756 Model) - Portable 110-220V Travel Charger by Jerry Mackey

This product is designed to operate on 110-240 VAC (works well on 100 VAC in Japan) which covers most of the world. The compact design and small size make it easy to fit in a suitcase. The plug is US standard (compatible with Japanese and Philippine standards), but many upscale hotels around the world have a US-compatible outlet. in a razor only bathroom cabinet, perfect for that. However, I still recommend carrying a plug adapter like https://www.amazon.com/gp/product/B01N59M473 and a short US extension. for a good preparation. By the way, the body of the toothbrush itself has a battery inside, and it's probably illegal to put it in your luggage for check-in. Good Trip!