The Perfect Combination of Features, Quality, and Price LCD Auto Darkening Lens - 3.93" x 2.64" viewing area, 10.4 Square Inches! Almost DOUBLE the size of standard viewing windows. Check out the competition...Their viewing windows will typically be 4-6 square inches. Be careful if they only list the "filter size," because this includes the solar panel and housing unit, and IS NOT the viewing window size! Brand - Rhino Welding Helmets Model - "Large View" Helmet Body - Nylon Light State - #4 (DIN4) Dark State - Adjustable #9-#13 (DIN9-13) The Helmet provides continuous UV and IR protection Reaction Time - 1/25,000 Second Delay - Enables control of the time that the lens remains dark after welding has stopped - adjustable between 0.15 seconds - 0.80 seconds Sensitivity Control- Enables adjustments for varying ambient light and welding arc Low Battery Indicator - Red Light will indicate low battery Sensors - Independent/Redundant (2) Power Sources - Solar Power and (2) Lithium CR2025 Replacable Batteries Recommended Welding Processes and Amp Ranges: Stick Electrodes - (Less than 40-500 Amps) MIG - (Less than 100-500 Amps) TIG/Gas Tungsten Arc Welding - (5-400 Amps) Air Carbon - (Less than 500-700 Amps) Plasma Arc Cutting - (60-400 Amps) Plasma Arc Welding - (Less than 50-400 Amps) Safety - Conforms to ANSI Z87.1 / CE / CSA / AS/NZS / EN379 / ISO9001-2008 Headgear - Ratchet-Style with Headband Lens Covers - 1 Interior and 1 Exterior lens cover come installed on the helmet Weight - 1.2 Pounds including Headgear Warranty - 2 Years PLEASE NOTE: This helmet is not suitable for "overhead" welding applications, laser welding, or laser cutting applications. It also does not have a grinding feature.