Technical Data:1) Working environment: temperature: 0~40 digree relative humidity: =1.5*10(6) ions/cm(3)6) Effetime area: 10~12m(2)7) Air flow: 2.0~7.5m(3)/h8) Lifetime of motor: >=50000h Operation Guide:1) Plug one terminal of the USB into computer USB port and the other into the unit.2) Turn anticlockwise the top cover and pick out the cotton piece and drop favoriteessential oil or perfume. Replace the cotton piece into the unit.3) Install the top cover and turn tightly.4) Press the buttom "POWER" , the unit will work with the LED indicator on.Function Guide:The computer mate air purifier combiness TiO2 photocatalyst,activated carbon filter,highconcentration negative ion, plus strong turban fan setting into one compactand innovative unit,which contributes to decompose or exterminate various contaminationincluding dust, particulate,bacterial,virus,VOC(volatile organic compound),smoke,microorganismetc. Its high concentration negative ion will help toexterminate static caused by computer, which can be generally used in office,lab,computerroom,bedroom etc. You may drop essential oil or perfume to cotton pieceincluded to create a romantic sweet-scented environment(essential oil and perfumehaven't been included). Maintenance:1) Be sure not to clean the machine with organic solvent. Switch offthe unit beforecleaning,then clean the unit with soft cloth or neutral detergent. Make sureno water flows into the machine.2) Remove the dust from the ion outlet with dry brush after using after using forsome dsys.3) Please shut off the USB connector if the unit won't be used for long time.4) Frequently cleaning the negative ion outlet to get best purification effect. producing area:China payment:T/T or L/C at sight supplying capacity:100,000pcs