view area:98*44mm, dark shade :DIN9-13 , light shade:DIN3(4), switching time: 1/25000s , delay time :0.2-0.5-0.8S can be selection , sensitivity: low-middle-high can be selection, welding / grinding can be selection, UV/IR protection: up to shade DIN16 , power on/off :automatic , net weight : 450g , packing Dime :72*49*32CM , 6pcs/cnt