Model Number: HC7710W Key Specifications/Special Features: About the product1. Remove food leftovers, clean inter-dental area effectively.2. Gentle massage gum, improve dental and oral hygiene.3. 0 - 90 PSI adjustable water pressure for varying oral care needs.4. 600ml large capacity water tank.5. Water nozzle rotates in every direction.6. High frequency pulse, up to 1400 times per minute.7. Water only, as acid mouthwash may corrodes oral irrigator.Package includes3 X 5913 standard Nozzle1 X 5915 tongue scrapper nozzle1 X machine1 X charger