I buy a second time, already two pieces. I really liked the freshener. I recommend to everyone. The only negative is not very long keeps the charge, about a month. To a good quickly get used to, I want to work and work...))) thanks to the seller, a good product.
Pts long shipment and shipping, maybe everything is related to coronovirus. Ozone smell is heard if sniffing the device, at maximum power in the refrigerator ozone smell is not, as many write :)), works without recharging 3 days at maximum power.