5 Cleaning Modes & One-Button Enhancement: Strong, Normal, Medium, Sensitive, Pulse. Delivers 1400 high-pressure water pulses per minute to remove 99.99% of deep food debris, effectively massaging gums and promoting blood circulation. Beginners should select Sensitive mode. In Normal, Medium, and Sensitive modes, water pressure increases by holding the mode button. Travel Companion: Features a 2000 mAh battery lasting up to 30-40 days with twice-daily use, offering up to 4 hours of continuous operation on a full charge. USB charging interface allows charging via adapter, power bank, or laptop. Detachable Water Tank & 360° Rotating Nozzle: The 200ml detachable water tank meets single-use oral cleaning needs. Comes with 5 interchangeable nozzles that rotate 360° for easy cleaning of hard-to-reach areas missed by traditional brushing. IPX7 Waterproof & 5 Nozzles: IPX7 waterproof design allows use in the shower. Includes 2 standard nozzles, 1 orthodontic nozzle, 1 periodontal nozzle, and 1 tongue cleaner nozzle. Each family member can use their own hygienic nozzle. Nozzles are easily replaceable by pressing the top button.