Stars and Stripes Design Viewing area 30% larger than Miller XLi and XLix Series lense Ultra-clear light-state makes set-up and repositioning more efficient while providing continuous UV and IR protection Four independent arc sensors provide continuous arc-sensing capability for your most demanding applications - highly recommended for low amperage TIG Analog controls provide quick concise adjustments - Shade Control (9-13), Lens Sensitivity and Delay (.10-1.0 sec) are all internally adjusted Auto-off circuitry at 15-20 minutes plus low-battery indicator Lightweight, comfortable and well-balanced design Rubber spatter gasket provides excellent lens protection and is easily changed Excellent magnifying lens holding system holds magnifying lens securely in place while allowing for vertical adjustment Two-year limited warrantyLense speed: 1/20,000 second Delay control: .10-1.0 second Internal adjustment shade control (9-13) Viewing field: 3.85" x 2.38" Low amperage TIG rating: 5 Amp Battery life: 3,000 hours Weighs just 18 oz. 216321 Helmet with lens Fatigue reducing Comfort Cushion Helmet Bag Replacement cover lenses (5 outside lens shields and 2 inside lens shields)Replacement Lens Cartridge - 216328The helmet that inspired the design of Miller's 75th Anniversary Chopper - built by Orange County Choppers Also known as 216-321 Improved version of 216826