Superior auto-darkening lens for arc, MIG and TIG welding.
Large viewing lens: 3-7/8'' x 1-5/8''
1/25,000 second switching speed (clear to dark state)
Variable shade control--shades #9 to #13
High/low light sensitivity adjustment
Automatic power on/off with adjustable delay time
High impact-resistant polyamide nylon construction
Backup rechargeable battery
Full face coverage with ratcheting headband
Meets ANSI Z87.1-1989 standards