PS:Suitable for ALL HUAWEI/Libod/HiLink Features: 1. Soft DuPont bristles, appropriate for sensitive tooth to apply 2. Ultrasonic electric toothbrush can efficiently remove plaque and reduce gingival necrosis. 3. Adopt DuPont American tynex standard 0 bristles bristles,gently on your teeth. four bristle tip diameter, deep clear the space between teeth 5 authorised through means of FDA and UV sterilized. 6 sealed packing, far more safe to use. 7 update the toothbrush heads each 3 months eight you have any questions about the toothbrush model, you may search the advice of purchaser service. Thank you. Indenpently sealed packing