PS:Please hear in on the model: For BAIR X1S/G1/G20*Note: Non-original, applicable brush head 1. Ultrasonic electrical toothbrush can efficiently get rid of plaque and reduce gingival necrosis. 2. The look of the 3-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 ordinary 0 bristles, brush accepted by means of FDA and UV sterilized. 4. Vacuum packaging, scientific security standards. 5. This kind is acceptable for people who smoke or drink coffee. 6. Suitable for BAIR X1S/G1/G20 Electric toothbrushes. 7 you have any questions about the toothbrush model, you'd consult customer service. Thank you packaging-