DESIGNED FOR LARGE ROOMS: The 360 sleek tower design uses advanced 5-stage filtration with a long-life HEPA filter. Renpho air purifier filters and circulates air in prescribed room size, up to 5 times per hour. The purifying efficiency is 30% higher and purifies speed is 30% faster than other ordinary air cleaners. Cleans large room about 480 sq. Ft every 12 minutes, twice as fast as key competitors on speed.REAL-TIME AIR QUALITY DISPLAY: Renpho pollution sensor Imported from South Korea communicates indoor air quality by changing the color of LED in real-time, While auto mode automatically optimizes the speed setting 1 through 4. TIME OPTION: Whether you are saving energy or finding the best setting for you, we've included a timer function to fit your needs. A timer is available for 2/4/6/8 hours to consider your convenience. DESIGNED FOR SWEET DREAMS: It is very quiet at sleep mode with only 26db, you can sleep in a restful and soothing bedroom in a dark environment. In addition, Using this HEPA air purifier can relieve allergies and asthma symptoms and make you feel relaxed all night. SMART FILTER CHANGE REMINDER: Built-in Replacement Indicator lets you know that you need to replace the filter. Comparing the prices of other brands' replacement filters, you can save much with Renpho filters for different demands. STRETCH YOUR DOLLAR: The Corona loss associated with DC is negligible, the air Cleaner consumes as little as 2W of electricity. Running this air purifier 24 hours a day for an entire year can cost as little as 6 dollars up to 30% less than other air purifiers. Product Size: 9.8 x 9.8 x 17.2 inches. AQ Light: Blue, Green, Orange, Red. Speed Setting: 4, 3, 2, 1. Timer: 2H, 4H, 6H, 8H. Lowest Noise Level: Filter Replacement Indicator: Yes. Type of Filter: Pre filter+H13 True HEPA + Activated Carbon Filter. Certified: ETL, CARB, CARB (California Air Resources Board). This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Indoor Air Quality & Fans\Air Purifiers". The seller is "sethiqo50" and is located in this country: US. This item can be shipped to United States.