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7 level electric acoustic toothbrush with 90-day battery life
IPX7 waterproof IPX7-level waterproofing is a crucial feature for electric toothbrushes because it ensures that the device can withstand expos... -
Customization of intelligent timed electric toothbrush
IPX7 Waterproof Waterproofing is very important for a sonic toothbrush because it is an electrical device that comes into contact with water f...
