Solar Automatic Darkening Welding Helmet Mask Head-Mounted Argon Arc Welding Protective Cap Flat Flip Half Helical The product is shipped based on the color or size of the main image of the product page. Features: Proffesional Welder Protective Helmet --- Auto-Darkening welding Helmets are designed to protect the eyes and faces from spark, spatter, and harmful radiation under normal welding conditions. Clear Comfortable View --- 92 x 42 mm(3.62 x 1.65 inch)4 layer clear visor viewing area allowing the welder to see clearly at different angles; Light weight (12.5oz) suitable for long time working; Balanced with an adjustable and fatigue-free comfortable headgear. Easy Operation --- Equipped with sensitivity and delay settings for adaptability for different environments and task durations with 2 Sensors variable shade adjustment from DIN9 -DIN13; Response time(bright to dark):Less than 1/25000 seconds (normal temperature conditions). Premium Quality --- Solar powered cells provide years of life under normal welding conditions. Made of high quality pp material antifall and with large space for heat dissipation more comfortable for wear. Wide Application --- Recommended to automotive, construction, and food & beverage manufacturing, metal production and fabrication, military maintenance, repair and operation (MRO), mining, oil and gas, transportation, etc. Specifications: Material: PP Filter Size: 110*90mm Active Viewing Area: 95*48mm Light Shade: DIN4 Dark Shade: DIN.9-13 Way to shift Dark State: External control Switching Time: 1/25000s Sensitivity: Adjustable Dimming response adjustment: Internal control Bright state response delay: 0.1-0.8s Number of arc sensors: 2pcs Power Supply: Solar cells & lithium batteries Sensors to Weld Arc: 2 Item Size: 24.5*20*26cm/9.6*7.9*10.2in Item Weight: 355g/12.5oz Package Weight: 450g/15.9oz Package Size: 25*25*33cm/9.8*9.8*13.0in Package List: 1 * Welding Helmet 1 * Head Band 1 * User Manual