160 l/min flow rate for increased comfort and protection Electronic control compensates for higher filter resistance to ensure correct flow is maintained Lightweight NiMH battery provides full shift operation On board chip data logs all usage which is downloadable to provide full service and maintenance information Conforms to EN12941 & EN12942This system includes a powered air unit, battery, charger and comfort belt.Filters, hose, and headtop will need to be ordered separately.