There is really nothing special about this smaller car air purifier other than being small. It's very lightweight and all I had to do was plug it in. The blue light shows that it's working. The nice thing is it doesn't use chemicals and doesn't have a motor. You must have your car on for it to run and should take it out of the lighter socket when not in use. I guess for the price it was a good deal. Since I have a larger car I think I need something with a little more power to circulate to the back.
https://www.amazon.com/gp/product/B078W3RFVQ/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1

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