PS:Suitable for Oclean X/ X PRO/ Z1/ F1/ One/ Air 2 /SEFeatures:1. Soft DuPont bristles, appropriate for sensitive tooth to use2. Ultrasonic electrical toothbrush can efficiently get rid of plaque and reduce gingival necrosis. Adopt DuPont American tynex typical zero bristles bristles,gently to your enamel bristle tip diameter, deep clean the distance between teeth5 accepted by FDA and UV sterilized sealed packing, much more secure to use update the toothbrush heads every single three months8 you've any questions about the toothbrush model, you might consult visitor service. Thank you sealed packingSuitable for Oclean X/ XSuitable for Oclean PROSuitable for Oclean Z1Suitable for Oclean F1Suitable for Oclean OneSuitable for Oclean Air 2Suitable for Oclean SE