... 11 *No battery change required Large view 100x49mm Fixed dark shade 11 Auto-darkening Welding Helmet Order No. WH2300001 ... 3.94”x1.93") 3),Light state:Shade 3 4),Dark state:Fixed shade 11 5), 2 arc sensors 6), ... Switching time from light to dark: 1/25,000s 7),Delay time:0.5s 8),Solar ... and CSA Z94.3 Standard LARGE VIEW 100x49mm Fixed dark shade 11 Auto-darkening Welding Helmet