-Use the portable air cleaner of the necklace  type.

-Use the USB port of computer of car-navigation.

-Remove the electronic waves from computer  monitor, cellular  

  phones(have to buy USB gender)

※Feature IONIC-PORTABLE AIR CLEANER

 1. USB Port Necklace Type Air Cleaner

 2. Input Source Of Electricity : DC5V/DC3.7V,300m charger lithium

     polymer battery / 30mA

 3. In the world the lightest (35g) / the least size

     (75*22*27,W*D*H,mm) Air Cleaner

 4. Anion Emission : 2,000,000

 5. No-Ozone Air Cleaner

 6. Lenoard Method Without Management After the fact