Water Flosser Professional Dental 600ML Portable and rechargeable waterproof Water Flosser with water tank. Now you can bring professional dental cleaning to your home! ▶ It can clean deeply between teeth and below the gum line, removing everything that typical brushing and flossing cannot. ▶ It features 3 operating modes. You can choose normal, gentle, and pulse modes to meet your different oral care needs. The pulse mode can provide 30-110psi water pressure to massage the gums, thus improving oral health. It is rechargeable and can be used for up to 10 days after a full 4-hour charge, charging via USB. 2 heads are included. How to use the device: ▶ Place the device on a stable surface. ▶ Fill the water tank. ▶ Press the "Mode" button to select the desired mode. ▶ Press and hold for 3 seconds to turn it on. ▶ Position the nozzle close to the teeth and gums at a 90° angle. ▶ It cannot be used while charging, disconnect the power after full charge before use. Ensure that the tank is properly closed.