M5 Necklace Wearable Mini Personal Air Purifier with USB | Negative Ion Generator | Purifies Air Eliminating Germs, Dust, Viruses, Bacteria, Allergens, Mold, Odors, and More (White)

It works but beware if it swings round and the point touches you it hurts. I've attached a piece of plastic to the front to stop it touching me.

It's a small gadget almost an accessory. It just makes that beeping sound all the time. It's not silent at all. It's tolerable after a while though. Otherwise, will see how this gadget will be helpful overall.

ETA 2021: Since buying this AVICHE M5, it emits a high-pitched, irritating bleeping whine that may be on the edge of peoples' hearing spectrum, nevertheless it's very annoying and especially at night. 2nd Edit 16th February 2023. Shortly after I posted this original review, the seller refunded me, which I thought was generous. Also I was allowed to keep it, and to my surprise, 2 years later this high-pitched whine stopped. Honestly, I don't know what caused the whine, but am very pleased it's finally stopped. Because of this, I've reduced its rating from 5 Stars to just 3.

Like most users I have always wondered if this unit actually does anything because I am never sure if there is anything in the air to be avoided. But now I am sure. I am very allergic to cats and generally have to leave a house with cats in just a few minutes. But wearing my ion generator, I was quite happy in a house with two cats for more than an hour. I knew there was something in the air and the unit helped me avoid it.

This is an excellent device. It is original and has a certificate as it is important these devices release no ozone.. people buy ozone devices but ozone is dangerous and radiation is as you know the same. This device releases neg ions only . They have been found to kill all viruses even by hospitals. I use it for covid purposes and believe distance this powerful device and a mask should be sufficient . However i warn that if you are in an environment where viruses are everywhere or you are in direct contact with a positive person e.g kissing etc then it is completely going to be ineffective..

We bought this product for our 9 month old daughter to wear during the plane ride. It was working fine until it shocked my daughter while she was taking a nap and woke her to up to screams. As I try to take it off, I also got shocked and I immediately turned off and put it away. Needless, we’re returning it.

Bought this for a string of upcoming flights. I fly often but not so much in the past year, thought I was being proactive. 1st flight and 3 days later tested positive for covid … oh well. I still wear it durning flights.

DISAPPOINTED! Bought this device last October, it was working good had long hours of usage but suddenly it stopped working. Don't connect to charge, no red light when charging. It doesn't come on at all! Rubbish piece of thing didn't last with me.