PS:Please snoop on the model: Replacement for Xiaomi Mijia T300/T500*Note: Non-original, relevant brush head 1. Ultrasonic electric toothbrush can effectively eradicate plaque and reduce gingival necrosis. 2. The appearance of the 3-d brush adapts to the luster of the teeth. The small and delicate brush head is simple to the touch inside your mouth. 3. Adopt DuPont American tynex basic 0 bristles, brush accepted through means of FDA and UV sterilized. 4. Vacuum packaging, clinical safety standards. 5. This variety is acceptable for folk who smoke or drink coffee. 6. Suitable for Xiaomi Mijia T300/T500 Electric toothbrushes. 7 you've got any questions about the toothbrush model, you would consult guest service. Thank you packaging-