It has interchangeable dual modes - Ozone mode that has sterilization functions and ionic mode that cleans the air and improves a person's mood.It has multi-function use:Purifying air in the refrigerators, car, office, shoe cabinets, living spaces and othersIt has a USB Powered Chargeable port

Ozone Mode 

Powerful deodorization, sterilization functions to remove toxic and allergens in the air by ozone.This mode should only be used when no humans or animals are around the house

• Remove harmful virus, bacteria, germs, mildew, bad odors, benzene, formaldehyde & TVOC
• Help extend the storage life of food

Ionic Mode

Effectively removes particle pollutants in the air by releasing a tremendous amount of negative ions.

• Dispel air pollutants such as dust, smoke and PM2.5.
• Increase environmental anion concentration to freshen the air and create positive vibes.