Household air purifier usb portable portable negative ion air purifier in addition to smoke odor purification deodorizer

High-concerned chemical : None Oxygen Supply : 3.1L/min(included)-5L/min(not included) Wind Speed : Standard Power Supply : Alternating Current Style : Air Purifier Application : 10-20m³ Coverage Area : 11 - 20 M² Capacity (CFM) : Other Power Source : A.C. Source Usage Condition : Household Anion Density : 1000000pcs/m³ Certification : ce Type : HEPA Filter Installation : USB Function : Dusting Power (W) : 37W Air Volume : 151-300m³/h Brand Name : KNCOKAR Voltage : 5V Origin : Mainland China Noise : ≤50dB