Pure Enrichment PureZone Mini Portable Air Purifier - Cordless True HEPA Filter Cleans Air & Eliminates 99.97% of Dust, Odors, & Allergens Close to You - Cars, School, & Office (Black)

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Not effective. It’s very small. There are 3 modes even highest mode is very feeble. I want to return it but it is late.

Even after overnight charging and remaining plugged in car charger, the unit does not operate on maximum speed and shuts off. Can’t do more than level 1, which has very little power.

Excellent versatile air purifier, which fits in small places. Even sits in a car's cup holder! We've taken these to medical appointments, on airplanes, to conferences, and even to restaurants. Have recommended them to many people.

It runs but seems like it pulls very little air. The main picture shows it being used in a car but if you put it in your cup holder, then almost 100% of the vents that pool air is actually blocked then by your cup holder since it pulls from the bottom sides..... The airflow is so weak I'm imagining it's not pulling much car cabin air at all to filter other than the air that is inside of the cup holder. Even when on the highest setting where you put your hand over it you can barely feel if it is on or not since there's little air movement. For the price point of this very small device, there should be a charger included and there is not, Just a USB chord. This makes sense difficult to know if you're using a charger plug that is going to be appropriate for this electronic device or not and how that might impact longevity of the battery. For the very small device at $40 you would think that would be included. For those reasons I took off a star. It runs, it's not very loud at all. I'm not sure about effective ness because I can't smell much anyway but seems to be working. I ran it the first time in my bedroom while sleeping right next to my bed and was plugged in the first night, the second night I unplugged it to see how long the battery would last and when I woke up it was not on so the battery died sometime in the middle of the night only on the lowest setting. Seems like the battery charge does not hold very long, Other than that seems good.