Compatible with Oral B iO 7 8 9 10 Series Electric Toothbrush charger. The charger is made of high-quality materials, IPX7 waterproof and dustproof. The use safety factor is higher, the charging is safer, and it can be used in humid environments such as kitchens and bathrooms. The external design is exquisite, and the internal design is exquisite. After multiple process tests, the function is exactly the same as the original charging base . The charging base has a magnetic function, which is a perfect substitute for the original charger. The power cord can be stored, occupying less space, and is convenient to carry, making it a must-have for traveling.