Solar Power Welder Welding Helmet Mask Automatic Adjustable Shade Lens Filter Electric Welding Mask Helmet Welding Lens For Weld|Welding HelmetsFeatures:* This welding goggles lens provide a protection against UV and IR radiation during the entire welding process.* Suitable for most kinds of welding mode.* Delay time can be selective.* Sensitivity adjustment: you can according your working conditions choose.Specifications:* Material: Resin* Dimensions: 110*90*9mm/4.33*3.54*0.35inch(approx)* Viewable size: 92 *42mm/ 3.58*1.65inch(approx)* Light state levels: DIN4* Dark state levels: Din9-13* UV/IR Protection: 16* Response time: 1 / 2500S* Recovery time: 0.2-1.0S non-polar adjustment* Sensitivity control: Low-High non-polar adjustment* Power supply: solar* Rate of UV transmittance: 313nm