PM2.5 world's first digital display, the first use of touch keys, all intelligent automatic control. Japan imports SHINYEI sensors, dual induction smell of dust, LED high-definition color display overweight oversized black crystal filters, carbon filters single crystal filter weighing up 1260g, is four times the filter imported brands, the whole work with materials and effects far more than the imported brands. Product Description: Brand: Yi Fuyuan Model: YFY-K004 Color Category: White Rated Voltage: 220v-50hz purification efficiency: 99.5% Display Platform: LCD color HEPA expanded area: 2.0 square meters Rated power: 45w Application area: 61㎡ over net Weight: 7.2 kg Rated noise: 32-52.5db Product Dimensions: 326 * 210 * 640MM amount of negative ions: 8000000 Intelligent Control: Microcomputer features: In addition to PM2.5 in addition to formaldehyde addition to smoke dust germicidal air purification technology: Activated carbon ion plasma of HEPA UV photocatalytic filter Product Category: Air purifiers air purifiers air flow: 301-400 cubic meters / hour Power Source: AC