Product Model: 41001 ●Auto darkening welding mask ●Main features:     1.High strength flame retardant nylon,strong,durable and light weight    2.Simple operation,comfortable wearing,all-positional protection of the face,neck and ears  3.Auto darkening light control,darkness shade no,positioned accurately   4.High intensity ultraviolet/infrared shielding protection to ensure the operator from UV/IR and other harmful rays of the injury ●Filter dimension (mm):110x90x9 ●Viewing size (mm):92x42 or 98x48 ●Light state shade:DIN4 ●Dark state shade:DIN9-13 ●Shade control ways:external,stepless adjustable ●Response time:0.0002s ●Sensitivity control:adjustable ●Time from dark to light:0.3-0.5s ●UV/IR protection class:DIN15 ●Working temperature:between -10°C to 55°C ●Power supply:solar cell & lithium batteries ●Package *1pc/box,6pcs/ctn *Carton size(cm):73x35x52