Ionic Air Humidification Purifier For Formaldehyde Removal Tabletop Purifier Product attributes Function: Negative ions, eliminate odors, eliminate odors, remove formaldehyde, intelligent display, humidify and purify, disinfect and sterilize, remove PM2.5, remove secondhand smoke, and eliminate allergens Brand: Jingyu Lighting Working principle: negative ions, HEPA technology Noise: Below 36dB (dB) Air purifier air volume: 50 cubic meters/hour Power mode: USB Control mode: button type Applicable area: 11 (inclusive) -20 (inclusive) Color; White, pink, green Filter type: composite filter Style: Desktop Style: Creative style Applicable scenarios: household and office Intelligent type: buttons Installation method: No installation required Energy efficiency level: Level 1 energy efficiency Shell process: ABS Applicable audience: others, allergic constitution, smokers Friendly Tips: 1.Due to the light and screen difference, the item's color maybe slightly different from the pictures. Please understand. 2.Please allow 1-2cm differences because of the manual measurement.