Authoritative International Certifications:FDA Registered Class II Medical Device, and certified by over 10 authorities such as CE and SGS
The filter can generally be used for 2000 hours
Reduce the risk of contracting Influenza A, Influenza B, Covid19, RSV, ADV, Mycoplasma Pneumoniae, subtypes 1 and 3 of Influenza B and subtype 2 of Influenza B.