PS:Suitable for doxo Features: 1. Soft DuPont bristles, correct for sensitive teeth to apply 2. Ultrasonic electric toothbrush can efficiently eliminate plaque and decrease gingival necrosis. 3. Adopt DuPont American tynex classic zero bristles bristles,gently for your teeth. 4 bristle tip diameter, deep clear the gap between tooth 5 permitted by way of FDA and UV sterilized. 6 sealed packing, much more secure to use. 7 update the toothbrush heads each 3 months 8 you have any questions about the toothbrush model, it's essential to seek the advice of visitor service. Thank you. Indenpently sealed packing