IWELD FANTOM 4.6 Aut. LCD Welding Helmet (Bike-Girl) Classification: 1/1/1/2 Size of Viewing Area: 100x60 mm Number of infrared sensors: 4 Light shade: DIN 4 Dark shade: DIN 5-8/9-13 Switching time: 0,1 ms Delay time: 0,1-1,0 sec Power ON/OFF: Automatic