Oral B Pro Gum Care Electric Toothbrush 1 is designed exclusively for people with especially sensitive gums and teeth and a need for superior cleaning. It has a Sensitive Mode and a built-in audible pressure sensor that protects the gums if you brush with too much pressure. It includes a sensitive ultra-thin head that protects the gums and gently cleans the gum line and the Interspace head that provides an additional interdental cleaning routine, removing even more plaque between the teeth.