I really like the shape of this Mist Intensity Home Aroma Diffuser Air Humidifier and it is on the bigger side as well. I was easy to set up and so colorful. It changes to many different colors it is fun just to watch it change. It holds about 500 ml of water and can run up to 10 hours each time before needing to add more water. I added about 4 drops on my peppermint oil and it just fulled up the room of amazing smell. I like how this works was so easy to use. The buttons are right on the side and easy to push and set.