1、Touch switch control wind speed and turn on and off the machine, convenient operation. 2、High efficiency filter screen. Three‑layer multi‑function filter screen, good purification effect. 3、Each fan blade through the dynamic balances test, so that high speed rotation can also maintain precise and stability. 4、USB Plug in use, suitable for home and car use, exquisite compact and convenient. 5、Anion purification, effective filtering PM5, formaldehyde, smoke and so on. 1 x Host 1 x Power Cable 1 x Filter Screen1 x Car Charger 1 x Anti-Slip Mat 1 x Aromatherapy Tablet1 x Manual  Condition: 100% Brand NewItem Type: Air PurifierMaterial: ABS+PCPower Supply: USB Plug in Size: Approx. 16 x 16 x 4cm / 6.3 x 6.3 x 1.6inEnvironment: Home, car useFilter screen replacement: 1. When the filter screen of the purifier is used for 3-6 months or so, it needs to be replaced and shut down by touching the power button. 2. Pull the solar panel (namely the top cover) out of the machine. 3. Take out the filter screen that needs to be replaced. 4. Install the new filter into the body and press and tighten the filter. 5. Place the solar panel (namely the top cover) on the main body according to the original position, and the installation is completed.Note: Due to the different degree of pollution of the environment, the life cycle of the filter is also different. It is recommended to replace it every 3-6 months.