LIGHTNING FAST - 4 lightning fast arc sensors engage and darken the filter in 1/15,000 of a secondPANORAMIC VIEWING - Additional DIN 5 side lenses allow a wide, 20.4 square inch panoramic view while workingSHADE CONTROL - Independent shade control allows you to fine tune the DIN level according to preference or welding processIMPACT PROTECTION - Shell is rated ANSI Z87+ for maximum protection against impacts and flying debrisADJUSTABLE DELAY - Adjustable lightening delay can be set from 0.2 - 1.0s to reduce user eye strain and fatigueDUAL PROTECTION - Auto-darkening filter is protected from sparks and slag by both a large exterior and a smaller interior protective lensLASTING POWER - CR2450 battery is augmented by a solar cell that charges as you weld for lasting powerCOMFORTABLE - Multi-point adjustable headgear with integrated sweat band stays comfortable during long welding jobs This product ships in approximately 1 days