iMeshbean&reg; Lightning Skull Design Hood Solar Auto Darkening Welding Helmet USA Brand:iMeshbean;In full conformity with CE&ANSI Z87 standards;Viewing Area:98mm*43mm(3.86"*1.69") Can be used for Arc/Mag/Mig/Mma/Stick/Tig Welding, or Plasma Cutting;Grinding function available. Light state:DIN4;Dark state:DIN9-13 Outside adjustable; UV/IR protection up to shade DIN 16; Auto switching time: 1/25000 S;Delay Time: 0.1- 0.8S; Charges with exposure to welding or sunlight Sensitivity: Low to high adjustable;Power supply:lithium cells & solar cells