Model Number:Welding Helmet Mask Solar Auto Darkening Adjustable Shade Range Auto-Darkening:Yes Solar Powered:Yes Size:29*23*22cm Sensitivity:Viewing area:3.66x1.69 inch/(93x43 mm) with 2 Sensors variable Power Supply:Solar powered cells Product Name:Solar Auto Darkening Adjustable Shade Range DIN 9-13/Rest DIN 4 Welder Product Type:Welder Protective Gear ARC MIG TIG Pattern Weight:14.99oz/425g Pattern: Working Temperature:-10Celsius-60Celsius Storage Temperature:-20Celsius-70Celsius Working Humidity:20%-80% Light Shade:DIN4 Dark Shade:DIN9-13 Switching Time:1/25000s Delay Time:0.1-0.8s Color:as shown Material:PP Package Contents: 1* Automatic Darkening Welding Helmet 1* User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.