I took this device to improve well-being during an exacerbation of allergies, within a month it coped with its task quite a bit, after a month the effectiveness fell. So this device is useless for me.
With its pros:
Stylish design, minimalistic, reacts to the smell of cigarettes and when cooking.
Its cons:
You need to change the filter every six months, and the cost of filters is not cheap. Takes up a lot of space, too noisy in manual mode. More like a fan.See full review