PS:Please listen in on the model: Replacement for Oclean X/ X PRO/ Z1/ F1/ One/ Air 2 /SE *Note: Non-original, relevant brush head 1. Ultrasonic electric toothbrush can effectively get rid of plaque and reduce gingival necrosis. 2. The appearance of the three-D brush adapts to the luster of the teeth. The small and delicate brush head is easy to touch inside your mouth. 3. Adopt DuPont American tynex typical 0 bristles, brush approved by method of FDA and UV sterilized. 4. Vacuum packaging, clinical safety standards. 5. This range is appropriate for folk who smoke or drink coffee. 6. Suitable forOclean X/ X PRO/ Z1/ F1/ One/ Air 2 /SE Electric toothbrushes. 7 you've got any questions about the toothbrush model, you would search the advice of shopper service. Thank you. -Vacuum Packaging-