1. Capable of trapping and filter extra fine dust(smaller than 0.1㎛), bacteria, virus, carbon monoxide, cigarette smoke and other sick home syndromes as well as substances. 2. Comfortable filter cleansing and inexpensive cost of maintenance. 3. Small, simple design, harmonize well with one’s place. 4. The one-button operation, is easy for users of all ages though following instruction on the manual is recommended. 5. Made In Korea.