Features: Efficient production of fuel oil with advanced oil-electric power EFS and stabilize fuel consumption. Negative ion concentration area covered 4 million per cubic centimeter, powerful air purification function. Can eliminate the odor, smoke, suspended matter, etc in the car to ensure a good air purification and sterilization effect, enjoy fresh sterile air. 90 degree folding design, free to adjust the oxygen delivery angle. Built-in high-speed fuses to protect the use of security. 4V intake grille design, can increase air convection, improve air purification efficiency. Specifications: Material: ABS material Input voltage (DC): 12V Color: Black / White (Optional) Stable Voltage System: EFS System Negative ion concentration: 4 million/ cubic centimeter Package Weight: Approx.165g Size (extended): 120 x 35 x 22mm Package List: 1 * Voltage Stabilizer Air Purifier1Efficient production of fuel oil with advanced oil-electric power EFS and stabilize fuel consumption 2Negative ion concentration area covered 4 million per cubic centimeter, powerful air purification function 3Can eliminate the odor, smoke, suspended matter, etc in the car to ensure a good air purification and sterilization effect, enjoy fresh sterile air 490 degree folding design, free to adjust the oxygen delivery angle 54V intake grille design, can increase air convection, improve air purification efficiency