Product descriptionProduct Name: Teeth WasherWaterproof rating: IPX7Life time: 30 daysBattery storage capacity: 1600MAHCharging method: USB chargingWater tank capacity: 320MLGear mode: pulse mode, normal mode, soft modeSix special groups need more careOrthodontics/implants, pregnant women, children over 6 years old, swollen gums, mouth ulcers, elderlyTip: It is recommended that you use soft mode for the first time. There may be slight bleeding from the gums for the first time. This is caused by the long-term filling of the gingival sulcus being opened and cleaned. Due to different usage habits, please refer to the actual usage time.