This is an OTOS brand air purifier that is worn over your chest and connects to a hoodie. It is battery powered. It is missing the charger and the hood. The filters and hose are in perfect shape.
The unit powers up and blows air. It is supposed to pressurize a hood or suit with filtered air.
This unit came from a warehouse job that was not very dusty.
These units sells for over $650 new with hoodie. You can purchase the charger and hoodie separate.
Get this cheap.
No handling.
Would be great for hazardous work environments where filtered air is needed.