Welding Helmet Lens - TOOGOO(R)Solar Auto Darkening Welding Helmet Lens Mask Goggles Automation Filter Shade Suitable for most kinds of welding mode Delay time can be selective the users eyes and face a full protection against UV and IR radiation during the entire welding process, even in the clear state Sensitivity adjustment: you can according your working conditions choose Dark state Shade No: DIN9-DIN13 stepless adjustment