Features: Certified to AS/NZS 1716:2012 for Respiratory protective devices Lightweight and compact Exchangeable Li-Ion battery Adjustable airflow in five levels (170-240Ipm) Flow control system maintains constant airflow regardless of level of filter clogging or battery charge Audio visual alarm Indication of filter clogging and battery charge Newly designed LED control panel Simple one-button operation New click-lock system for easy attatching the filter cover Built in baarometric sensor - automatic airflow compensation depending on altitude, works from -500m up to 4500m Applications: Welding, Grinding and surface finishing operations Automotive and shipbuilding industry Agriculture, food processing industry Building and construction, wood working Silica - (Refer to government guidelines) Includes: P R SL Filter, Li-Ion Battery, Battery charger, Comfort padded belt, Flow indicator, Pre-filter, Fan unit, Filter cover