IWELD FALCON 5.5 LCD Welding Helmet (Blue-Metallic) Classification: 1/1/1/1 Size of Viewing Area: Extra 100x100 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