Product detailsThis air purifier can filter 99.97 percent of dust. Filters air pollution of PM 2.5 (pollution rate).Suitable for those who suffering from extreme air environment,like nasal stuffiness,cough,sneezing,and different occasion,such as working,bathroom,living room,bedroom,office,etc.This air purifier also fits for allergies and asthma,and place it to somewhere close to you will be more efficient for use.We strive to design a solid air purifier for home use,so it was made of sturdy ABS material with the feature of lightweight,and easy to carry and it is a very useful and portable mini air purifier.Super quiet air cleaner with less than 36 decibel when working for sleep disorder is a good choice to improve insomnia,,and there is no noise to interfere your sleep any more when use our purifier.Specification:Color: WhiteMaterial: ABSVoltage: DC5V-9VProduct Weight: 1.3lbThe noise index: 36dBControl Type: Handy press.Packing size: 7.1 x 5.5 x 2 inch.Air purified speed: 50 cube meters per hour.Application area: 11-20 square meters around.Power Source: USB Cable (INCLUDED).Scope: bedroom,desktop,car,vehicle,pets,toilets,etc.Packing Included:1 x Air Purifier.1 x USB Cable.1 x Instructions.