Professional welding helmet provides comprehensive protection for you. With great design of its appearance、 it looks fashionable.Features:Professional welding helmet with high sensibility and stable performance.Effectively protect your eyes from getting hurt by spark、 spatter and harmful radiation.Made of high quality material with high intensity、 durable and safe to use.Auto darkening、 quick response、 the levels of darkness is adjustable.With time delay、 your eyes won't be hurt by remained arc、 much safer.Large view window、 low battery indication、 convenient to use.With fully adjustable ratcheting headgear and soft sweat band、 comfortable to use.Powered by lithium batteries and solar cell.Note:This welding helmet is not suitable for laser welding and oxyacetylene welding.Specifications:Material: PPUV/IR Protection: up to Shade DIN 16 at all timesLight State: DIN.4Variable Shade: DIN.9-13Switch Time: 1/25000sTime Delay: 0.2-0.8s AdjustablePower Supply: Solar Cell & Lithium Batteries(2 * CR2032)Power on/off: Fully AutomaticSensitivity: AdjustableGrinding/Welding: SupportArc sensor: 2pcsOperating Temperature: -5??C ~ 55??CStoring Temperature: -20??C ~ 70??CFilter Size: 110 * 90 * 9mmViewing Area: 100 * 50mmHead Circumference: 51-62cmItem Weight: 552g / 19.5ozPackage Size: 23 * 23 * 32cm / 9.1 * 9.1 * 12.6inPackage Weight: 863g / 30.5ozPackage List:1 * Welding Helmet1 * User Manual"