The headgear is comfortable to wear. Based on the ergonomic design, the headband can be adjusted by different sizes. It will make the wearer feel more comfortable; • Better shape, new headband design, close to the shape of the wearer's head, so that the wearer can move freely; • When use with face shield , it's convenient, which is made of PC material, with excellent impact protection performance and wide protection area; • Excellent airflow distribution and lower noise; • It is suitable for welding, slag treatment, metal cutting and other grinding to protect eyes from splashing of chemical liquid, pesticide, paint and so on; • The PAPR is applicable with welding helmet, hood , or face shield to use; WIDE VIEW, BREATHABLE AND DUSTPROOF Special fabric development, innovative protective design, breathable anti-static, comfortable and convenient to wear • Cooperate with breathing apparatus, provide comprehensive dust-proof protection, bring you smoke-free meticulous care SPECIFICATION Standard Air Filter Filter classes: TH3P R SL Air Flow Low Speed: Great than 6 CFM (170 LPM) minimum High Speed: 7.06 CFM (200 LPM ) Operation Temperature -5°C to +55°C Storage Temperature -20°C to +55°C Blower unit shelf life 1 year Filter shelf life 3 years Battery Type Rechargeable Lithium Battery Charging Time About 3 Hours Battery Life 500 Charges- Run Time Dependent On Air Flow Rate Run Time: Approximately 4-6 hours Low Speed/High Speed Approximately 6-8 hours