1. If you have had oral or gum surgery in the past two months or are undergoing treatment, consult with your dentist to see if you can use this toothbrush. 2. Bleeding from the gums may occur when using this product for the first time. If bleeding persists for more than a week, seek advice from your dentist. 3. If you have a pacemaker or other electronic device in your body, consult your doctor before using this toothbrush. 4. The brush head of this toothbrush is for personal use only, do not share it. We recommend replacing the brush head every three months. 5. If the toothbrush is not used for a long time, charge the product every three months to avoid battery damage due to over-discharge. 6. This product contains a rechargeable battery. Do not disassemble or throw it into a fire to avoid the risk of explosion.
