Brand from Japan: Kiss You. With the power of negative ions, it facilitates removal of dental plaque, which causes tooth decay, periodontal disease, halitosis. Brush only with water, interchangeable brush. It is a lifestyle toothbrush. Even when used three times a day, 3V batteries that can be used for over 1 year are built in. However, the battery can not be exchanged. Flocked type: Special two-tiered flocked hair. Head Type: Medium 2 rows cut off. Clearly brush type between teeth. It is not an electric toothbrush. How to use: Just brush your finger or the palm of the board to touch the metal plate of the board and it is OK. Negative ions flow from the built-in battery to the mouth. It is a replacement time when the tip ends open. You can also change to another type of brush as you like. When the lamp glows by pushing the checker button, the remaining battery level is sufficient. Battery life: For normal use for over 1 year (Battery replacement is not possible).