Optrel Swiss Air Complete Respiratory Protection System with Control Panel - 4700.010 Introducing the optrel Swiss Air, a revolutionary TH3 PAPR (powered air-purifying respirator) system. The Swiss Air PAPR system offers: Flame-retardant ventilated half-mask Powerful TH3 filter unit protecting you from 99.8% of all harmful particles, aerosols, vapors, smoke and even viruses Positive pressure to support breathing and avoid fatigue Central control panel for filter and battery status, airflow regulation, automatic altitude, and temperature compensation Automatic airflow calibration 14-hour high-performance battery, you can work uninterrupted Adjustable head harness accommodating sizes from XS-XL Choose to pair the Swiss Air with an optrel hood such as the Panoramaxx CLT or the Crystal 2.0, an industrial helmet, a weldCap or no helmet at all. Take a deep breath, safety never felt so comfortable!