How to choose? To put it simply, choosing an electric toothbrush is based on these three steps: Look at the speed-how many speeds are important, generally above 30,000 rpm, which has a limited cleaning effect and is not suitable for adults.
A second look at the mode-how many cleaning modes, different modes of vibration frequency are different, friends with sensitive gums should pay attention to ~ 5 modes are more, some only have 2-3 modes, high speed such as 40,000 rpm/min It is better to choose more modes, and the gears are divided more finely for easy selection.
Three looks at battery life-how many days of battery life, I personally think that it can be used for more than 2 weeks on a single charge.
