Speed: 1. Charge the device fully before first use and every 3 weeks for optimal performance. 2. Fill the 310mL water tank with warm water. 3. Choose from Normal, Soft, Pulse, or Point modes based on your needs. 4. Select the appropriate nozzle for your dental needs. 5. Place the tip in your mouth and adjust the water pressure as needed. 6. Move the tip along your gum line and teeth, pausing briefly on each tooth. 7. After use, remove the tip and rinse it under warm water. 8. Wipe the unit clean and store it with the tip facing up. 9. Avoid using hot water or leaving the unit submerged in water to prevent damage. 10. For a thorough clean, remove the water tank and clean it with warm water and mild soap. Allow all parts to air dry before storing.