Specifications:It can change colors according to different air quality, so you can always know the air quality of the environment.The powerful power makes the air pressurized to increase, so as to achieve the adsorption of polluted air to the filter element for purification.When the purifier is connected to the power source, it will automatically turn on when the car starts, and it will automatically turn off when the car is turned off.Magnetic upper cover is more convenient to disassemble and assemble.The difference between normal and high-end models is that the high-end models have smart display and smart touch functions. Item Name: Air PurifierMaterial: ABSPower Supply Mode: USB/Car Cigarette LighterWorking Voltage: 5VRated Power: 3WApplicable Space: 10-20Mute Index: Purification Method: HEPAFeatures: Portable, Durable, Easy to Use, Air CleanerCable Length: 1.2m/47.24" (Approx.)Size: 17.3cm x 17.3cm x 5.5cm/6.81" x 6.81" x 2.17" (Approx.) Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes:1 x Air Purifier1 x Power Cord1 x User Manual