Replace the filter every 6 months to optimize its work To do its best work, the JINPUS Air Purifier recommends changing the filter every 6 months. Healthy and clean air for the home In modern homes, the allergen density is often 2-10 times higher than outdoors. The number of people suffering from allergies or even allergic asthma is increasing every year. This affects about 5% of adults and 10% of children and adolescents. JINPUS air purifier can filter the indoor air and effectively filter allergens, smoke, particulate matter, gases, odors, Bacteria and viruses. Package Contents 1 x Air Purifier (filter included) 1 x USB cable (plug adapter not included) 1 x Manual.