Advanced full digital controled shade, sensitivity,Big Viewing aera, Self-check & Battery rechargable,suit for weld, cut,grind. Viewing Area: 100* ... ~+60°CWork mode: Weld, Grind, Cut (3 Modes Selectable)Self-check Function: YESBattery Replaceable: YESApproval: ANSI Solar Powered Auto-darkening welding ...