1) Produce the ?Air Vitamin?-O-2 (2) Refresh ..Dispel the fatigue (3) Sober brain , improve working efficiency (4) Strengthen the metabolism, improve the immune function (5) Except the bad smell, cigarette, nicotine. dust removal. (6) Except that mould, defends mould in the room (7) Disinfect, disinfect, prevent disease (8) dispel the household appliances screen and emerges (9) Dispel the coal gas, oxidize toxicity (10) Fragrant, fresh air floats (11) Large screen display calendar, times, temperatures and automatic to give the correct time