WBM Smart air purifier has built-in bluetooth speaker and different LED color lights, known as 3-in-1 air purifier because of 3 stages: filtration, pre-filter, activated carbon filter, and composite HEPA filter. These filters trap 99.97% of airborne particulates with smaller diameter of 0.03 microns, PM 2.5, toxic gases, smoke, dust, pollen, molds, pet odor, lint, pet dander, viruses, and bacteria to keep sanitized and purified air. Covering an area of up to 10 Sqm. Grab our 24dB quiet operation air purifier. Quiet KEAP technology keeps noise levels as low as 28 dB and as high as 50 dB when the speaker connection is off. The air purifier emits 10 million pcs/cm3 negative ions for deep cleaning by trapping airborne particulates. Other features of the portable air purifier are spectrum mood soft night light, steady reading lamp, adjustable fan speed. 4 different fans speeds like high, low, mid, and sleep of the air purifier, filter contaminants from air without disturbing your nights.