PS:Suitable for SOOCAS X1/X3/X3U/X5 Features: 1. Soft DuPont bristles, compatible for sensitive tooth to use 2. Ultrasonic electric toothbrush can effectively eradicate plaque and reduce gingival necrosis. 3. Adopt DuPont American tynex classic 0 bristles bristles,gently in your teeth. four bristle tip diameter, deep clear the distance between teeth 5 approved by means of approach of FDA and UV sterilized. 6 sealed packing, far more secure to use. 7 sealed packing,With dust cap. Tips 1 purchase consistent with the corresponding model at the particulars web content 2 ordinary brush head, area to the acquired item