Electric Wearable Air Purifier Maskes,Air Supply,With HEPA Filter,for Dust Work,Painting, Machine Polishing, Welding

This product works perfectly! Shipping was very fast. The packaging is excellent. The assembly process is very easy. It is a quality product as well. But the cool thing is....they work perfectly! Much MUCH better than just a plain mask. The filter provided works EXCELLENTLY giving you clean, fresh air. If you are in a dusty environment and need fresh air I highly recommend this product!

I was unable to wear any regular masks because I get asthma attacks from fighting for air and breathing in fibers. This blows air right near my mouth and nose so I don’t have to fight the mask to breathe, and because I’m not sucking air through the material to breathe the fibers aren’t being breathed in. I was able to wear it without having an attack. Only problem is when I run out of filters sooner or later I don’t know how to buy replacements for it.It does smell like factory when opened but if you run it a few times for hours that dissipates.

It not the worst idea, But its not a completely sealed system so you can imagine its ok for the price.Pros:*It blows a gentle breeze to lips and up nose. Making breathing feel fresh and not stuffy or less humid than without.*Decent battery lasts for me about 8hr work day.*Mask combination after removal gives a sense of dirt or dust in the air, could just be me but might indicate the n95 + hepa style filters do work very well.*Mask is not rough, at least to my skin.Cons:*Not 100 percent as smells still can pass through seals or face mask, like smoke smell. Tar roofing smells...etc...*Hepa cartridge is a pain to place on yourself securely and close enough for the length of the hose.*Feeder hose can kink and reduce airflow.*Design may not be for general public, you look like medical patient.Other thoughts if the fan was stronger it can create a cpap effect or positive pressure blowing cooler hepa air easily into your lungs. May require some type of sealed face mask with a one way pressure valve, As alternate design. And if the fan is stronger maybe can make a two stage filter. I work in a dusty warehouse and hot humid and near a well-traveled city road.

It charged up and started fine. I was able to assemble it properly. The mask fit ok. And that is the end of what works on this product. The fan is tiny and provides very little in the way of air flow to the mask causing one to constantly over-breathe its capacity. The material on the hose is far too thin causing it to collapse, completely blocking any tiny air flow that does exist. This happens constantly no matter what position you try to use it in. The product might work if I sat perfectly still in a meditative position, minimizing my breathing, with the hose taped in a perfect position so that it won't collapse. But for real world use, this simply does not work. Cannot work. This is very disappointing because it would be relatively easy to design and build a product that works properly. The technology here is extremely simple; A battery powered fan, paper filter, hose and mask.

Whoever in Shenzen designed this product has done the rest of us a great service because the device is affordable, reliable and amazingly effective. It combines commodity components like a high-velocity fan and repurposed KN-95 face masks in a simple, generously equipped package that works extremely well.I used a portable air quality sensor to test the effectiveness of this filter earlier this week when Philadelphia, where I live, was blanketed for several days with dangerously dense smoke from forest fires in Quebec to our north.Before trusting my lungs to this little filter, I did a test by filling a Ziploc bag outdoors with smoky air. I put a portable air-quality detector in the bag and measured PPM 2.5 of about 280, which would’ve made me choke if I hadn’t been wearing a different (bulky but known-safe) respirator to conduct the test.I inserted the hose from this $40 powered filter into the Ziploc bag and zipped it mostly shut. Within 60 seconds or so, the bag had been completely flushed as the PPM dropped to zero. Sorry I didn’t record a video but I was more concerned with my safety and hadn’t been planning to post a review.With this unit I was able to do hours of work outside during the worst of the smoke storm, and the only time I smelled the wretched stuff was when I went outside having forgotten to turn on the fan.I had to keep the power level at two and sometimes three (full power) to keep all traces of smoke away from my lungs, especially after the wind picked up.This little thing was amazing from start to finish, and I found it far easier to breathe with the filter’s positive pressure compared to using my own effort to suck air through a conventional mask.I’m sad to need it, yet I’m thrilled to have found a reliable source of breathable air.