Ok so this fan is very unique, I'm still trying to get used to it but I'm slowly liking it, this fan is quiet first off, the settings go from sleep( #1), white noise (#2), refresh(#3) and power cool (#4). This fan is best used for a medium sized bedroom that has a good size, or for use in your office or desk. Reason why I'm saying this is because this fan is small as it can be, its very light and packs a little punch. Setting 1 & 2 are very quiet, and make very very little sound, you can hear your TV and everything else comfortably, but the 3rd and 4th setting your really using it like a real fan at this point. The air flow is not very strong on the 1st and 2nd setting but it regulates the air really good just like it needs to be while your sleep so that you have some ventilation. But I find this fan unique because it rotates and has a tiny timer setting which also surprised me so its good for those that need that extra air for keeping the room cool at least through the night, and the settings are from 2,4, and 8 hours. Hands down it works great, it vary from person to person depending on the amount of air you desire but for those that like a little cool breeze and a quiet fan this one is perfect.