ITEM NAME:Automatic Dimming Head-Mounted Solar Electric Protective Glasses Weldi QPT Descriptio n Description Material: PC Color: picture color Size: about 27 * 25 * 30cm Thickness: 20 (mm) Weight: 0.355 kg Product list: 1PCS *Solar automatic photoelectric welding mask Lithium battery / solar power Cartidge size: 108 * 50mm Window size (active viewable area): 96 * 30mm Shading level: DIN3 Dark level: din3-11 Way of turning dark state: not adjustable Delay time (delay time): 1 / 10000s Delay time: 0.1-0.8s Arc sensor: 2 Operating temperature: (operating temperature): - 10 Â ° C to 65 Â ° C Application: ordinary electric welding, spot welding work feature: The invisible barrier is damaged. Do not block your sight. More comprehensive protection. Lightweight, portable and durable. comfortable to wear. Easy to install. The welding sunshield welds more gas in eight relatively lower brightness and TIG slag splashes, relative to the spectacle mask. It can be blocked by a larger area to effectively protect the eye area. Suitable for argon arc welding and gas shielded welding, grinding. note: For manual measurements, please allow an error of 0-1 cm. Because the display is not calibrated the same, the color of the items in the photos displayed on the computer monitor may vary slightly. We offer you what you need! Automatic Dimming Head-Mounted Solar Electric Protective Glasses Welding Mask.Product list: 1PCS Solar automatic photoelectric welding mask. Lithium battery / solar power. Application: ordinary electric welding, spot welding work. We want to make sure you are happy with our item.