Battery powered with soft vibrationsn3 toothbrush heads with 4 functionsnGum stimulator helps with babyu0026#39;s sore gumsnGreat for infants and toddlersnConvenient storage case includednThe Summer Infant Gentle Vibration Toothbrush is great for infants and older. The one toothbrush head can be used as a gum stimulator. The other two toothbrush heads can be used for extended use. A case is included for storage or travel.