We wanted to get our young daughter a red night light as apparently it helps to produce melatonin which is essential for sleep. The user has the ability to set their preferred colour which isn’t always a feature with multi coloured night lights. This machine also has the added benefit of a humidifier. And with the 500ml tank capacity, this means it will run for the entire night which is a bonus. A quality product at a great price. Would highly recommend to other parents.