1.Dual-wavelength UV lamp 2.Built-in ioniser 3.Special duct design 4.Rubber surface 5.Ideal for car Mini car air purifier ,with USB interfaces. With CE certificate.No filter replacement necessary, easy to clean.Low energy consumption.With the additional fragance.net body weight :180 gThe density of ozone ,0.02 ppm Best-seller products guarantee !car air purifiers