Speed: 1. Fill the water tank with lukewarm water. 2. Attach the desired tip securely. 3. Select the preferred pressure setting or cleaning mode. 4. Lean over the sink, place the tip in your mouth, and turn on the device.5. Guide the tip along the gumline and between teeth, allowing water to clean each area. 6. Empty any remaining water from the tank after use. 7. Rinse the tip thoroughly and store the device in a dry place. NOTE: First-time users should start at lowest pressure setting and gradually increase over time.