NO NOISE - JUST FRESH AIR. Geniani humidifiers fills your room or office with clean and fresh air and makes your work and daily activities much more pleasant and efficient. 3L WATER TANK. Even a large room or office (on the high mist setting) will be full of fresh and clean air for 12 hours. If you have a smaller room (on the low setting), 3 liters is enough to produce air moisture up to 24 hours. NIGHTLIGHT FOR BETTER SLEEP. Geniani cool mist humidifier helps you have a better relax at night with the soft light. AUTOMATICALLY TURNS OFF. If during the night a humidifier happens to be out of the water, you can sleep tight - it automatically shuts down and turns on after you refill it. 360-DEGREE MIST NOZZLE. It helps you decide in which direction you would like the moisturized air to be spreaded.