Features:_x000D_ _x000D_ 8 launch head design, effectively improve the unit time of negative ion release. _x000D_ Intelligent cycle timing circuit design. Work for 30-40 minutes and then shut down for 7-15 minutes to ensure that the function of long years of work. _x000D_ Enclosed shell design and the high voltage side (launch head) placed in the shutters which effectively prevent the risk of electric shock. _x000D_ Adopt ABS engineering plastic shell for highly safety and long durability. _x000D_ Can be put on table in room, car or wall mounted. _x000D_ Effectively dispel the unpleasant odor, remove smoke, dust, kill harmful bacteria, give you and your families a fresh indoor air. _x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Material: ABS engineering plastic _x000D_ Color: Black_x000D_ _x000D_ Voltage: 110V _x000D_ Plug: US_x000D_ _x000D_ Power: 800 million/cm3_x000D_ Application Area: 10-30 square_x000D_ Size: 8 x 3.3 x 10.3 cm / 3.15 x 1.30 x 4.06 inch (appr.)_x000D_ Cable Length: > 140cm / 4.59ft_x000D_ Ozone: