2pcs Electric Constant Flow Air Supplied Fed Respirator Half Face Gas Mask Pump. Welcome to our store! 2pcs Electric Constant Flow Air Supplied Fed Respirator Half Face Gas Mask Pump 2 Pipe Respirator Respirator-System-Device Gas? Specification? Material: Silicone Mask + Plastic Pump + Rubber pipe wiped with cloth Color: Colorful Pipe Interface: R40 Charging time: 3 hours Working time: 7-9 hours Air supply flow rate: First gear: 62 L/min Second gear: 74 L/min Motor design life:? 5000H Charger Output Voltage: DC12.6v Charger Intput Voltage: AC 100-240V 50/60Hz Mask Size: (L)X(W) 13.5X9.5cm /5.31″X3.74″appr. Charger Plug: US Plug(We will be based on your country to send the corresponding adapter plug)? Features? Brand New and high quality. Adjustable air flow? Lightweight and portable mask? Long time and low noise working? Especially suitable for users who wear glasses for a long time? Effectively protects the wearer’s respiratory tract from poisons and dust? For use by people in different fields such as industry, agriculture, teams and scientific research? Package included? 2 X Gas Mask 1 X Air Pump 2 X Air Pipe 1 X Charger 2 X Canister. The product came very well packaged. I’m very happy. Thank you for everything.