1/20,000 second switching speed (clear to dark state);Variable shade control from #9 to #13 with a resting shade of #4;Solar powered cells with battery assist provide up to 6 years of expected life under normal welding;Optimal viewing area - 6 sq. in.;Automatic power on/off with adjustable delay time

• Adjustable Shade Auto-Darkening Welding Helmet

Adjustable Shade Auto-Darkening Welding HelmetChicago Electric Welding