1. Ultrasonic electric toothbrush can effectively remove plaque and reduce gingival necrosis. 2. The appearance of the 3D brush adapts to the of the teeth. The small and delicate brush head is easy to Press inside your mouth. 3. Adopt American tynex classic 0.152mm bristles, brush approved by and UV . 4. Vacuum packaging, safety standards. This type is suitable for people who smoke or drink coffee. 5. Suitable for V1X1/X3/X5/X3U Electric toothbrushes. Name: Electric toothbrush head Type: replaceable toothbrush head Model Number: For Item Type: Toothbrushes Head Gift: Toothbrush holder Gift 2: Dental floss Model: For V1/X3/X3U/X5 Electric Tooth Model 2: For V1/X1/X3/X5/X3U PS: Please pay attention to the model:For Note: applicable brush head Material:plastic colour:Black Package Contents: 8 x Electric toothbrush head Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.