PS:Suitable forSaky 3T G33 Features: 1. Soft DuPont bristles, appropriate for sensitive tooth to use 2. Ultrasonic electric toothbrush can effectively get rid of plaque and decrease gingival necrosis. 3. Adopt DuPont American tynex ordinary zero bristles bristles,gently in your teeth. four bristle tip diameter, deep clear the space between enamel 5 accredited via FDA and UV sterilized. 6 sealed packing, much more safe to use. 7 update the toothbrush heads each three months eight you've got any questions on the toothbrush model, you may consult guest service. Thank you. Indenpently sealed packing