Rechargeable electric toothbrush with the following characteristics： ●1. The handle adopts DC motor, and the brush head moves 90。to rotate. ●2. Deceleration warning 2 minutes ●3.Automatic shutdown for 3.10 minutes ●4. Blue indicates mane. ●5. The handle has a blue LED as the battery indicator; The light goes on until it is fully charged. ●6. The handle is washable and meets the ipx7 waterproof standard; The brush head can be removed and replaced. ●7. Lithium ion battery: 3.7V * 1PC, 700mah/ 14500. ●8. The handle has the function of forbidding charging, and the working state is automatically closed when charging. ●9. Universal voltage design charger: AC100-240V, 50/ 60Hz How to use electric toothbrush correctly： Step 1: Install the brush head, remember to brush the head tightly into the toothbrush shaft, a little hard press into it. Step 2: Electric toothbrush brushing frequency higher than manual toothbrush,Therefore, in the choice of toothpaste, we should try to lock those very fine particles, neutral gentle toothpaste, to avoid excessive friction teeth and gums. Step 3: Toothpaste dosage does not need too much, when the toothbrush on the teeth, open the electric toothbrush button, to avoid splashing around the toothpaste. Step 4: When brushing, first clean the outside of the tooth, Grasp the toothbrush horizontally and slowly along the gum line, Stay on each tooth for a few seconds, Secondly, clean the inside of the tooth, Move along the inner side of the tooth, and more stay inside the lower incisor that tends to form a calculus, Then, clean the chewing surface of teeth, also stay for a few seconds, Finally, clean the back of the molars, This is the place easiest to accumulate bacteria. Electric toothbrush timer function, the best brushing time is 2 minutes.