Honestly this is my favorite heater. Here’s why; because I’ve bought three of these within the past couple of years as gifts and for myself;Firstly, it’s super cute in appearance. It’s small, not heavy, and you can change the colors from orange, blue, yellow, purple, and cyan, to even plain white. It casts a cozy glow and I like it. I honestly do wish they had pink, the purple is nice but a girl wants pink!They last incredibly long. I actually bought my first one over a year ago at T.J. Max and I had no issues with it, I still use it and it works very well! I bought a new one because my roommate was moving out and she liked my heater. I let her take it so I purchased a new one.The noise level isn’t too bad actually. I end up using it like a sound machine, it’s like a fan mixed with like light white noise and honestly I fall asleep sooo fast haha.It will stay on unless you turn it off, so no auto shut off. There is a little black nub on the bottom and that has to be pressed down so it’ll turn on. So if you have your heater plugged in but it’s not on a surface to keep that black nub down; you will not be able to turn it on and use the heat.