-By generating a large number of negative ions in a 19 million / m2 chain, you can use a negative ion mask to protect your body.
-effective absorption of air in the smoke / dust / formaldehyde
-effectively reduce PM2.5 dust particles
-help to reduce respiratory / allergy symptom
-silent and silent, free of consumables, compact and light, no ozone or nitrogen oxides.
-USB rechargeable environmental protection design
-It takes only 1.5 hours to fully charge and can last 20 hours
-Japan Anion Association JIS standard level 5 (highest level)
L:64mm x W:28mm x H:17mm