This water flosser features an upgraded internal waterproof structure for enhanced water resistance, a 300ml large-capacity water tank for a full clean in one use, and a built-in 2500mAh battery that lasts 20–30 days on a single charge. Its low-frequency, high-water-flow design protects gums while providing a comfortable experience, and five pressure modes meet the needs of different users. The IPX8 waterproof design separates the water pump, motor, circuit board, and battery into independent units, further improving overall waterproof performance. The patented gravity ball design enables cleaning from any angle, ensuring thorough, no-dead-angle oral care.