This is the second personal air purifier I've used. Can it protect you from allergens, pollutants or viruses? gimmicks. In theory, the ions charge up the nasty particles you want to avoid, causing them to stick to surfaces like a mask rather than entering your lungs when you breathe. So I can't say if this cleaner really does its job, but it can't hurt either. This model has a few advantages over the personal air purifier I've used in the past. Initially it is assumed that the battery lasts for 40 hours of operation; I haven't used this air purifier for that long, but the charge definitely lasts longer than my previous device. Second, this model gives you a choice of two power levels: a lower one, presumably to save battery power, and a higher one that allows you to increase the bubble. purified air around you. Thirdly, this air purifier comes with a clip that can be attached to a belt, breast pocket or bag strap and a necklace that allows you to wear it around your neck. Hung around the neck, the device lies flat on the chest and does not flip over when walking like my previous chain cleaner. plastic and looks better. So I'm giving this device two lights and I think you'll find it useful in tight spaces whether you're travelling, attending a crowded event, riding in an elevator, whatever. BENEFITS: * Said to emit a 3ft bubble of high output air-purifying ions around you. * Battery life of up to 40 hours. * USB charging in 2 hours. * Comes with mounting clip and necklace. * Attractive design * High quality materials. * Reasonable price (especially compared to what Hammacher-Schlemmer sells!) CONS: * None that I can think of, assuming ionization is a good thing.
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