Does it have a HEPA filter?

No. It uses a small allergen filter (FLT085) plus UV-C light, so it does not capture fine particles the way a HEPA purifier does.

What size room can it clean?

Its CADR is 6, which is far below room purifiers. Treat it as a personal-space device for a desk, car or small bathroom, not a whole room.

It is described as low noise, and owners say the low speed is quiet. High speed is audible but still modest.

Yes. The FLT085 filter is not permanent and must be replaced periodically, which adds ongoing cost.

Yes. It has an aromatherapy tray, so you can add scent while it runs.

It is small and light enough for a bag, but it needs power, so it suits hotel rooms and cars with an outlet rather than camping without power.

Rated 3.9 out of 5 from 36 ratings.

4 stores we checked sell it, including Guardian Technologies, Walmart, Sears, vminnovations.com.

At Guardian Technologies, for $14.99, as of our latest check.

$14.99at Guardian TechnologiesChecked 39 min ago

Compared across 4 stores. Prices are checked against each store and labelled with when.