This diffuser is different from these others. I like that it has the thirty second intervals. This is on when you press the mist button once. When you press it the second time, the light changes from green to red. When it is on red that’s when it will stay on continuously. The mist flows out smoothly. You have to make sure that the outer cover part is on properly or else the mist will not come up. You can get one here https://www.amazon.com/Holan-Ultrasonic-Humidifier-Adjustable-Multi-Color/dp/B01GRL0XMK I am impressed with how quiet this is. This also has a light button that you can press the first time so that the lights will change automatically. If you would like to keep it at one color like purple you can just press the light button again and it will stay at that color. I used my peppermint essential oil on this and it made my room smell refreshed. This comes with the diffuser, user manual and a measuring cup. This holds up to 120 ml. This is a good size for a bedroom. It has a cone like shape to it and it is soothing to look at. If you are looking for something to help with aroma, allergies and more then this is it. I received this product for free in exchange for my honest and unbiased review.