Brush head, brush head is very important, I use a soft brush head, because my gums are easy to bleed, if you and I are the same, it is recommended to use a soft hair brush, some businesses call it allergic brush head.
Waterproof level, electric toothbrush, built-in battery, safety is a very important step, then the waterproof level must reach IPX7 or above. Both the toothbrush and the charging stand are waterproof to IPX7. If the toothbrush is not reached, the water level of the charging stand must reach IPX7.
Function, about the function, this really depends on the individual, some people like him more functional, some people like him is a sonic electric toothbrush on the line, do not need too many functional choices.
In short, the motor quality is good, the sound frequency is suitable, plus the strength that suits you, no matter how many functions, you can see your preference.
If you want to know the electric toothbrush I use, you can go to this website to see the detailed parameters, if you still don’t understand, consult the merchant directly.