Hitronic Auto Darkening Helmet *Safety & Protection for your Eyes and Face *High-Quality Lens *Better Productivity while Welding Product Specification: •Viewing Window: 98 x 43 •Arc Sensor: 2 •Shade Control: External, Variable 6-13 •Switching Time: 1/25000s •Delay Time: 0.2-0.8s Adjustable •Grinding Function: Yes