About this item
 
HEPA H13 high-efficiency filter, filters PM2.5 by 99.9%. The filter should be replaced every 500 hours (about 2 months of a M-F 8 hour shift).
UNIQUE POWERED VENTILATION SYSTEM, CONTINUOUS AIR SUPPLY: An axial flow fan provides clean air that passes through the filter
THREE SPEED ADJUSTABLE CONTROL: High-level for physical labor and sports, mid-level and low-level for daily use. A continuous stream of fresh air is sent to the mask, alleviating the stuffiness in typical masks.
THREE-DIMENSIONAL MASK, FITS COMFORTABLY: Comfortable three-dimensional non-woven mask, the outer contour fits tightly to the face, preventing outside air from entering, and makes each breath clean and fresh. Adjustable nose clips.
RECHARGEABLE AIR PUMP: The air pump is rechargeable and can be worn using the arm band, around the neck with a lanyard, or it can be attached to a helmet using Velcro.
 
This item includes: 
 
Face Mask
Air Host
Vent Pipe Connector
Long Hose
Short Hose
Charging Cable
Mask Buckle
Arm Band
Lanyard 
User Manual