[Active oxygen technology] Active oxygen purifies odors and deeply decomposes odors. Ensure that your car is fresh and breathable, and enjoy the natural and fresh environment in the car. (Note: Please turn on the purifier after you leave the car, turn it off automatically at regular intervals, and open the window for ventilation after getting in the car.) [Convenient charging] USB interface, no "wire" system for purification, built-in 1200 mAh battery, can be used multiple times when fully charged, avoid frequent charging, wireless restraint, convenient and free to use. (Note: Power bank, charger and PC can all be charged.) [Low noise, stable installation] Small and exquisite, specially designed for car purification, the appearance is designed, easy to carry. 0 abnormal noise, elastic clip, the clip is stable and can not fall, say goodbye to the "squeak" shaking sound, low noise and mute. [Wide application] It is not only used in the car, but also can be used in the home, shoe cabinet, wardrobe and other small spaces to purify various odors in the home.