Description:Auto darkening welding filter lens with shade NO. 3 - 11 Overall-process protection against UV and IR Minimum lifetime of 5,000 welding hours View Area: Approx. 3.6 x 1.2 inch / 9.2 x 3cm Panel Dimension: Approx. 4.3 x 2 inch / 10.9 x 5.1cm High-impact resistant ABS material Solar powered Technical Specifications:Shade Number in Light State: Din3# Shade Number in Dark State: Din11# Response Time: Package Includes:1 x Welding lens