IONIC VEHICLE AIR PURIFIER WS-AP803 1.Stainless metal dust collector designed 2.Save energy 3.Soundless design, no motor Stainless metal dust collector designed under the front cover should be cleaned timely. You can open the front cover by gently plying the edge of the front cover using a screwdriver as shown by the instruction diagram. Specification: Model: WS-AP803 Rated Voltage: DC 12V Power Consumption: 1.5W/ 4AAA batteries Active Oxygen Output: d0.04ppm Ion Output: e1x104/ cm3 Dimensions( mm) : 103 x 56 x 94 Weight: 180g DESCRIPTION: Ionic air movement technology Soundless design, no motor Save energy Plug-in design and take no space Multiple-angle rotation, cute and light weight An additional power socket on the top can be used An extra standby arm plug is available