ITEM NAME:Automatic Variable Photoelectric Welding Glasses Anti-Glare Protective Hot 1x Descriptio n Description: - Specifications: Power supply: Lithium battery / Solar power Light Shade: Din3 Dark Shade: Din3-11 Active Viewing Area: 90mm*33mm Switching Time: 1/10000s(From Bright To Dark) Delay Time: 0.1-0.8s Power On/Off: Fully Automatic Arc Sensors: 2 Arc Sensors Working Temperature: -10℃ ~ +60℃ The Penetration of UV: