IWELD NORED EYE 3 Aut. LCD Welding Helmet (Green-Skull) Classification: 1/1/1/2 Size of Viewing Area: 96x39 mm Number of infrared sensors: 2 Light shade: DIN 4 Dark shade: DIN 9-13 Switching time: 0,1 ms Delay time: 0,1-1,0 sec Power ON/OFF: Automatic