This advanced & enhanced blower is designed for evacuation
forces as well as other personnel . engaged in strenuous
activity The blower creates over-pressure within the interior
of the mask, thus preventing the entry of . chemical and
biological warfare agents The blower supplies approx. 100
liters of air per minute, via two personal filters. The blower
is powered by 5.8 V lithium batteries for at least 15 . hours
of continual operation Made of polycarbonate, the blower
is fitted with loops for suspension from a belt or a back
harness; this arrangement provides maximum convenience
even under field conditions.