The ZBL 55 charges your electric toothbrush inductively, meaning wirelessly. You can permanently store your electric toothbrush in the ZBL 55. If you share it with multiple family members, you can even fit two additional brush heads into the ZBL 55. The cover of the ZBL 55 is removable, making it very easy to clean the built-in charger. You have the option of different models of the ZBL 55, depending on which toothbrush you use. If you decide to switch to a different model, the electronic insert in the switch box can still be used, and only a different charging base is required. ZBL 55 BPC, White, compatible with: Professional Care 500, Professional Care 1000, Professional Care 2000, Professional Care 3000, Oral B 3D, TriZone 500, TriZone 1000.