Looking for Answers about Northern Industrial Welders Auto-Darkening Welding Helmet with Grind Feature?

This Northern Industrial welding helmet is designed for both welding and grinding applications. The lightweight helmets 1/25,000 second switch time automatically darkens the lens the instant you start welding. Plus, the helmet acts as a protective shield when grinding by preventing the lens from darkening. Auto Darkening: Yes, View Area W x H (in.): 3 13/16 x 1 3/4, Switch time (sec.): 1/25,000, Adjustable Sensitivity: Yes, Variable Shades: 9-13, UV/IR Coated Lens: Yes, Adjustable Fit: Yes, Power Supply: Solar, Base Type: Auto darkening, Low Battery Indicator: Yes, Battery Included: Yes, ANSI Approved: Yes, CSE/CE Standard: CE Solar-powered auto-darkening lens charges with exposure to welding or sunlight Excellent lower amperage TIG responsce (≥5 Amps) High-level, quality LCD ensures the welding spot appears more clearly and protects your eyes from fatigue after extended use 2 independent arc sensors Variable shades 9-13 auto-darkening with sensitivity and delay adjustment Adjustable ratcheting headgear with replaceable sweatband Stylized flame graphics Includes extra lens, AAA batteries and low-battery alarm ANSI/CSA approved