Age Group:Children aldultItem Type:Electric ToothbrushType:Acoustic Wavehaped toothbrushu shaped toothbrushMaterial:Siliconemyst toothbrushu-shaped toothbrushQuantity:13. The rechargeable model,only a wire without a charging unit is included4. Please confirm the specifications of the order options before placing the order. The pictures without cups of the option specifications do not have cups.5. Since the brush head will be upgraded from time to time, the SKU diagram shows the shape of the large brush head, and the actual shape of the small brush head will be slightly different from the SKU diagram. Both large and small brush heads are customized according to the most suitable age for children, and the shape of the brush head is accepted by default when the order is placedProduct Features:- IPX7 waterproof whole body washable, prevents water droplets from immersing inside the fuselage.- Multiple modes, one-key start.Removes up to 7x more plaque vs. a manual toothbrush- Charging 1 time, brushing teeth for 15 day- 2 min smart timing, divide the mouth into 4 areas, each area for 30 seconds.2 minutes end brushing reminder to develop a brushing habit recommended by a dentist (one suggested the best brushing period)- 36,000 vibrations per minute, plaque and calculus have nowhere to hide