Description: 8 launch head design, effectively improve the unit time of negative ion release. 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. Enclosed shell design and the high voltage side (launch head) placed in the shutters which effectively prevent the risk of electric shock. Adopt ABS engineering plastic shell for highly safety and long durability. Can be put on table in room, car or wall mounted. Effectively dispel the unpleasant odor, remove smoke, dust, kill harmful, give you and your families a fresh indoor air. Specification: Material: ABS Color: Black Voltage: AC200-240V/50-60Hz Power: 800 million/cm3 Application Area: 10 square Size: approx. 105 x 80 x 37mm Cable Length: approx. 130cm / 4.27ft Ozone: