3-in-1 FILTRATION SYSTEM - Consist of pre-filter, true HEPA filter,Charcoal cloth filter, JESE Air Purifier reduces airborne particulate pollution by an average of more than 99.97% including household dust,formaldehyde,pet dander, pollens, smoke, PM2.5, as well as other small pollutants. 360° EFFICIENT & FAST PURIFICATION – JESE HEPA Small Air Purifier offers a 37.1m³/h Clean Air Delivery Rate (CADR). The 360 degree vents design ensures 360° enhanced airflow for efficient purification. It’s good for your bedroom, office, baby room, pets room, kitchen and other rooms around 10㎡/110 square feet. Powerful Hepa Technology:Air cleaner works seamlessly to eliminate dust, formaldehyde, Pm2.5,allergies and pets, mold spores and smoke. USING TIPS –Dual voltage 110-220V ;Before use, please take out the filter inside the air purifier and take off the plastic bag. We recommend you to replace the filters every 3-6 months according to the air quality of your area.The replace filter is B07X4D6Y3G