【Lens analysis】Using German advanced optoelectronic technology, the detector on the mirror is used to detect the arc generation and disappearance during electric welding, and the liquid crystal body is shielded from light to achieve the purpose of protecting harmful light. Eliminates glare, UV protection, and relieves visual fatigue. 【How does the dimming screen work】No manual adjustment required Before welding, the lens is in bright line of sight. When welding, it will darken and protect both eyes within milliseconds. It can quickly and reliably filter the welding arc under various lighting conditions. After welding, the lens will automatically return to normal, and the welder can immediately check the welding pool. Prepare for the next weld. 【Professional Performence】With a solar panel to for battery of welding helmet which can prolong the service life of the welding helmet.Fast response time provides better for welders. You will have a good with it at working and prevent occupational disease. 【High-sensitivity probe】The welding helmet replacement lens adopts highly sensitive arc sensor, stable and performance.The work efficiency is extremely high. Experiments show that this conversion speed will not cause any harm to the eyes. 【Liquid crystal dimming screen】When the arc is generated, the dimming screen is darkened by the normal moment; when the arc disappears, the dimming screen returns to the normal state. It needs to be used with the automatic dimming mask. It can't be used alone. It needs to be installed on the welding mask to be used normally., Weight: 0.1984160358 pounds, Manufacturer: Akozon