Fangrui Product Details [active Oxygen Technology]active Oxygen Purifies Odors And Deeply Decomposes Odors. 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 In The Car.) [convenient Charging]usb Interface, No Wire System For Purification, Built-in 1200 Mah Battery, Can Be Used Multiple Times When Fully , Avoid Frequent Charging, Wireless Restraint, Convenient And Free To Use. (note: Power Bank, Charger And Pc Can All Be .) [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