With its industry-leading motor-blower and constantly filtered airflow, the belt-mounted Responder CBRN PAPR is ideal for first responders, military and special ops personnel who require non-IDLH respiratory protection for up to 8 hours. The unit offers a choice of two MSA gas mask CBRN face pieces and three proprietary cartridges designed for CBRN, particulate and poisonous gases or vapors. The unit's constant airflow helps a user stay physically alert and focused, while also preventing fogging in the face piece. Batteries can be "hot-swapped, " and the blower's EMI shield ensures there is no interference with radio communications.