Darlie Jolly Junior Kids Sonic Battery toothbrush comes with 2 modes to better fulfil Kid's oral needs. Gentle mode: 16,000/minute micro vibration gently massage gums, enhance the gum health. Cleansing Mode: 22,000/minute micro vibration effectively cleanse teeth, protect oral health. Comes with 30-second reminder to remind children to change the brushing direction.2-minute Timer - to encourage children to brush for 2 minutes.