Description:  Active oxygen not only removes aldehydes and odors, but also kills 99.9% of sterilization, medical sterilization and odor removal, eliminates PM2.5, second-hand smoke, automobile exhaust, formaldehyde, and other bacteria.  1. In-car aldehyde and odor removal, sterilization.  2. Mask cleaning, sterilization.  3. Deodorization and odor removal, sterilization in hospitals.  4. Home aldehyde and odor removal, sterilization.  5. Office deodorization and odor removal, sterilization.     Working principle of active oxygen purifier:  Active oxygen is released in 1 second, odors are removed in 15 minutes, and bacteria are killed in 60 minutes.  Ozone will be automatically reduced to oxygen after 40 minutes, and there is no secondary pollution of chemical residue. It is a green and efficient disinfectant.  Tip: The air disinfection machine will automatically shut down after 60 minutes.     Feature:  Product size: 65 * 135mm.  Net weight: 0.32KG.  Charging method: USB 3.0.  Working voltage: DC5V.  Power: <5W.  Applicable space: 0.25m3-3m3.  Charging time: 2H.  Color: grey, silver, black, gold.  Built-in 1200mAH polymer lithium battery.  1 hour working mode (Every working 10 seconds, automatically pause for 10 seconds to work in this cycle).     Package included:  1 x Air Purifier