Speed: 1. Charge the device using the USB cable. 2. Fill the 300ML tank with water. 3. Select one of the 5 pressure modes. 4. Place the tip in your mouth and tilt your head back slightly. 5. Turn on the device and maneuver the tip along your teeth and gums. 6. After use, clean the tip and the unit, and store it in the provided pouch. 7. Always follow the safety warnings and precautions.