Magnification lens holder.| High-Impact tested and rated to Australian standard AS1337.1.| Auto-darkening lens complies with AS1338.1.| Lightweight, Durable and Shock Resistant shell.| Auto-on & Auto-off, no buttons to press, Hassle-Free operation.| Functions: Variable Shade 9-13, Sensitivity & Delay Adjustments, plus Grind-Mode switch (locks the lens in light shade).| 'Hinge & Lock' Lens Retainer System means easy cover lens replacement, Seals tightly against spatter to prevent damage to the electronic lens.| Reliable Power Source: Replaceable battery plus solar assist, efficient electronics for low power consumption.| 'Full Laminate' Lens Construction: Each layer in the electronic lens assembly is firmly laminated for superior optical quality and long service life. This is in contrast to cheaper lenses which are simply glued on the edge and, over time, are prone to contamination and failure.| Warranty: 2 years.