Suitable for Indoor Use: It's been tested and proven to the ultrasonic cool mist increases moisture in the air for easier breathing and a good night's sleep. Humidifiers help to relieve cough, cold and flu symptoms, nasal congestion, dry cough, sinus irritation, nose bleeds, & dry skin and hair, at the same time it can reduce the damage to the eyes and skin when placed in your bedroom. Can be used as a night light for bedroom. Aroma Diffuser Feature: There is a built-in aroma diffuser on the side of the unit. You can drop a few drops of your favorite aroma oil into the sponge in the pullout drawer to add and therapeutic aroma to the mist. Built-In Replaceable Filter: The built-in stone filter sits inside the humidifier cleansing all the water before it emits through the mist outlet. Kindly Note: /Tips: Recommend cleaning off the scale deposit in the water tank once a week Do not add essential oil directly to the nozzle, base or water tank(it will cause corrosion and malfunction) Please select the proper mist level according to the air humidity, the 1-2 level mist is always better unless the air is rather dry. Parameter: Size: 300*210mm Accessories: Filter Capacity: 3L Voltage: 220/ 50Hz Power: 25W Brand: Other Type: Humidifiers.