My bedroom is so dry and I often wake up with my nose or throat dry so I was so happy about this humidifier .not only is it sleek , modern and stylish I have never seen anything this cool looking before .but it actually works to put the moisture in the air . It’s so easy to use the tank size is 3.7 L. There’s a five year warranty . It comes with the humidifier tank, tank lid, in the tank base. Here is why I love it There’s three Mist settings Low is up to 30 hours, 18 hours is medium, 12 hours is high and then you need to put more water in the tank. Ultrasonic cool mist , there’s an auto shut off timer you can put it At 2 hours, 4hours, 6hours, there’s a water level window so you can see how much water is inside and it’s so easy to refill. You can even put in a few drops of essential oil’s. There’s probably room coverage it works for rooms up to 300 ft.