Features: 1) Releases 800,000 - 1,200,000 per minutes to purify air quickly 2) The ozone and the ion can remove the smell, mildew and the poisonous gas after fitment, such as formaldehyde, benzene and ammonia 3) Resolves and removes poisonous gas effectively 4) Easy to operate 5) Low power consumption 6) Can be used in any season 7) No contamination