1. Please kindly note that red lights will flash when you put it back to the charging base for charging. The inbuilt fan will stop working after 30 minutes. If the toothbrush is not being fully charged, it will continue charging. But if it's fully charged, lights will be off.
2. Smart timing design, it will automatically work for you for 45 seconds each mode, then it will stop working. If you need extra working time, you can restart it again.
3. Intelligent memory function, the kids electric toothbrush will remember your last time's model after work 45s and work on your model next time.
4. All kinds of toothpaste are suited to this electric toothbrush, but it would be much better to use it with foam toothpaste, as it would be easier to be dissolved, giving you the best result.
5. The toothbrush is completely waterproof and washable, but the charging base have a vent for air drying toothbrush, so the base is not waterproof, please do not soak the charging base into the water.
6. There are 2 sizes of brush for kids at different age, age 2-6 and age 6-12. Pls choose the right size for you.