So if you know me, you know I LOVE essential oils. I gave this diffuser a try and seriously love it. It has a wide mouth under the cap to make for easy pouring. It has a large tank so that you can diffuse the oils for like 6 hrs. It is quiet and it changes color too. How sweet is that? Ok.. so if you are going to diffuse essential oils and give your life a healthy boost.. this diffuser is a must have.