High lights: 1. Slince: Sound lower than clocks 2. Saftey settings: Auto off for over electric current flow and short of water. 3. 2.4 liters of tank capacity, can provide 8-10 hours non stop service, gives you a sound sleep. 4. High quality standards 5. Fine mist with special technique. 6. ABS plastic, eco-friendly. 7. Antistatic: No more "shock" when touching. 8. 360° Spray nuzzle.