What is oral-b 3900?

Oral-B 3900 is an electric toothbrush model by Oral-B. It features Triple Pressure Control technology that alerts you if you are brushing too hard, preventing gum damage. It also has a two-minute timer, ensuring that you brush for the recommended duration. The toothbrush comes with two modes: daily clean and sensitive, to cater to your needs. It has a lithium-ion battery that lasts up to two weeks, making it convenient for travel. The Oral-B 3900 also features a round brush head that surrounds each tooth to remove more plaque than a regular toothbrush. It is compatible with Oral-B's range of brush heads, allowing you to customize your brushing experience.