I got this as a review product tester. I love it! Small size and how portable it is. I went camping and this worked wonders and my tent with the Canada wildfires smoke coming down to our state. We have been under an air quality alert and this really helped clean out the air in my tent. I am very happy with this product. I recommend this to anybody that goes camping or in small spaces. I work in a warehouse where I cannot use this product, but it is great in small outdoor areas such as my tent my little shed. I leave it on low if you have it on high. It is a little loud battery. Life is great. Doesn't take long to charge either.