Brand new 28dB Whisper-Quiet OperationMillions of times high-frequency vibration per second breaks the water into a micro-fine cool mist to moisturize the air in your room and increase the humidity. A low noise level (lower than 28dB) reduces the disturbing possibility,ideal for the baby's room. Humidifiers Tips: Keep the room ventilated to fill the space with mist. Easy to Clean, Keep Healthy The transparent water tank allows you to monitor the real-time water line and degree of cleanliness for water refilling and tank cleaning. With a wide opening up to 8cm in inner diameter,you can stretch the hand inside the tank for thorough and effortless cleaning without dead cornersregular cleaning for sanitation. Stepless Control,360° Rotation Equipped rotary knob facilitates the mist level adjustment,making it easy to adjust to the suitable level with the mist output varying from 100ml/h to 200ml/h. Tilt the nozzle to deliver the fine cool mist far away, and it rotates