The 360°sleek tower design uses advanced 5-stage filtration with a long-life HEPA filter. 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.