1. Compatibility Commonly used in Braun Oral-B toothbrush models: D12 S12 S18 D17 D18 D19 D20 D29 D34 OC18 OC20 Professional 650 700 1000 2000 2500 3000 4000 D12013 D12013W D12523 3709 3728 3737 4736 4717 4729 8850.Fits all Oral-B round head toothbrushes. 2. Convenient This USB charger supports 5V voltage input, which can be used in all countries. You can charge your toothbrush with 5V wall charger, power bank, laptop, which makes your travel more convenient. 3. Inductive Power Charger This Oral-B toothbrush charger is very easy to use and inductive charging. Put it down and charge it, pick it up and turn it off automatically. So you can charge your toothbrush more convenient and safer. 4. Health and Safety The charger is made of food grade plastic material, non-toxic and odorless. The charger holder makes your toothbrush more stable while charging and prevents it from falling. 5. Pay Attention To The Model The pictures clearly show the shape of our toothbrush charger holder. If you are not sure whether our charger is compatible with your Braun Oral-B toothbrush models, please get a feel for our product photo or you can contact us for help. Product Commonly used in Braun Oral-B toothbrush models: D12 S12 S18 D17 D18 D19 D20 D29 D34 OC18 OC20 Professional 650 700 1000 2000 2500 3000 4000 D12013 D12013W D12523 3709 3728 3737 4736 4717 4729 8850. Fits all Oral-B round head toothbrushes. Electric Toothbrush Charger With USB Charging Cable and Charger HolderAn electric toothbrush charger designs for easy travel. Made of ABS, it is not only healthy and non-toxic, but also has IP67 waterproof function. Equipped with a USB charging cable, you can use your computer or mobile treasure to charge. No more worrying about not having a suitable outlet. Information: Charging voltage: 5V Size: 9.3 * 8.1 * 4.4cm Color: White / Black Material: ABS Fits all Oral-B round head toothbrushes. This triangular row base can be removed freely Using electromagnetic induction charging technology, the toothbrush is plugged into the outlet to start charging, and the toothbrush is turned off when removed, which is convenient and safe. In order to prevent the magazine from falling, we have designed a triangular seat cushion for the magazine. There are also two small pillars on the seat pad to place the toothbrush head, so you dont have to bother placing the family toothbrush heads where.