1. Universal compatibility for Oral B: This charger for Oral B is your replacement for model 3757 and fits over models, including Oral B Pro (1000, 2000, 3000, 5000, P3000, P4000), Genius (6000, 8000, 8900, 9000, 9000, 9000, 9. 900), IO series (3, 4, 5, 6), D series (D10, D12, D16, D17, D18, D19, D20, D29, D34, D36), S series, OC series as well as 3709, 3728, 3737, 4736, 4717, 4729, 8. 850, Pro 1 4. Please make sure your model matches this listing. 2. Safe and efficient, inductive charging: The charging station for Oral B uses non contact induction technology. Simply place the toothbrush—it charges contactlessly and stops automatically when fully charged or removed. Maximum safety for your Oral B electric toothbrush and durability. 3. Waterproof and dustproof: The waterproof charging station for Oral B is made of robust, insulated ABS plastic and is completely sealed. It resists splashing water, bathroom moisture, and even short term immersion. Easy to clean and absolutely suitable for everyday use. 4. Flexible USB power supply: The USB charger for Oral B offers maximum freedom—charge it via USB ports on power banks, laptops, car adapters, or standard plug power supplies (not included). as a portable charger for Oral B toothbrushes. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store