Features Swivels to allow for perfect positioning Easy to use-one touch operation works silently Plugs into cars cigarette lighter socket Negative ions effectively to clean, refresh and purify the air in your car Eliminate nicotine smell, bacteria and mold Specification Coverage 12m2 Voltage/power DC 12V / <5W Negative Ion density >2.5*106pcs/cm3 Ozone density <0.05ppm Net/ Gross weightg 39/74 Product size/ packing sizemm 128*34*30/150*45*35 Master Carton sizecm 38.5*25*35 100pcs/CTN