Weldclass Promax 500 Welding Helmet WC-05319

7-Year Warranty. Super-Sized Viewing Area: 98 x 87mm with Ultra-Clear Vision. Dual Shade Range: 5-8 / 9-13 plus Grind Mode for Versatile Welding Processes. 4 Arc Sensors for Reliable Arc Detection & Switching. Lightweight, Comfortable, and Easy to Use. High-Impact Tested and Rated to Australian Standard AS1337.1. Auto-Darkening Lens Complies with AS1338.1. 'Hinge & Lock' Lens Retainer System for Easy Cover Lens Replacement. Magnification Lens Holder (Compatible with Standard Magnification Lenses). Reliable Power Source: Replaceable Battery with Solar Assist. 'Full Laminate' Lens Construction for Superior Optical Quality and Longevity. Lightweight, Durable, and Shock-Resistant Shell. Auto-On & Auto-Off for Hassle-Free Operation. Welding Mode: Variable Shade 5-8 / 9-13. Delay: Adjustable 0.1-1.0s (Switching Time from Dark to Light After Welding Arc Stops). Sensitivity: Adjustable Low-High. Grind Mode: Locks Lens to Light Mode (Shade 4).