Product name Electric dental scalerPulse frequency 1600-3000 times/minWaterproof grade IPX7Battery capacity 800MAHRated voltage 2.4VRated power 7.5W30 minutes of battery lifeCharging time: about 3-4 hoursGear selection 3 gearsCharging method USB interfaceWashing mode standard, gentle, pulseProduct weight 370.4g The three modes can be switched freely at any timeConventional mode: standard water pressure, efficient cleaning, meeting most people's daily teeth cleaningGentle mode: gentle water pressure, comfortable and clean, suitable for sensitive teethPulse mode: alternating strong and weak, deep cleaning teeth hide book dirt usage method01. Select the appropriate nozzle and insert it into the body02. Fill the water tank with clean water03. Choose the right gear to align the teeth04. Close your lips and press the switch. Dental experts suggest:Use the soft mode for the first time for about a week, and use the normal mode after getting used to itTap the switch to use, and you need to pay attention to the following points when using:a: The direction of water flow is perpendicular to the teeth or gumsb: Move slowly around the teeth and clean the teeth in orderc: Thoroughly clean teeth, trays, crowns and denturesFor the first use, please do not spray water directly along the periodontal pocket for a long time to avoid discomfort in the gums