Effectively Clean- High-frequency vibration effectively remove teeth calculus caused by coffee, tea, smoking, which may caused by long-term and food residue depositing.When using it in your routine, leading to a fresher breath 8 Replacement Heads- Equipped with 5 different soft polishing tips: 2 silicone brush head, cleaning massage cup, flat brush, pointed brush. Unique design, easy to remove stubborn stains on the teeth, flat stains, interdental stains, improve the smoothness of the teeth to make the teeth smoother and shiny USD oulet- Pleae keep the USB cable power on during the use, it is not a battery charge type and not waterproof, please keep the body dry all the time, take the heads off after and clean the heads only, These products are not intended to diagnose, treat, cure or prevent any disease 3 Adjustable mode- The teeth polisher owns 3 vibration levels (Soft, Normal, Strong) , adapt to different kinds of dental plaque and tartar, you can easily adjust it to a suitable mode High frequency vibration- High frequency vibration polisher head, and has strong decontamination ability. It can penetrate to where traditional toothbrush cannot reach without causing any damage to gums. Choose appropriate cleaning head based on specific size and hardness of the tartar ,then adjoin the cleaning head to teeth, lasting for a few seconds, but do not press hard, then slowly remove it back and forth to avoid any damage to teeth or gums