Feature:1. LARGE WINDOW: The welding filter has 100x67mm large window screen, ensuring clear field of view and fatigue free viewing for a long time.2. AUTO DARKENING: Automatic darkening induction internal analysis, with high sensitivity, natural colors, preventing dazzling and visual fatigue.3. EYE PROTECTION: The solar welding lens feels lightweight, has a wide light source area, does not damage ARC light, not harmful to the eyes.4. DURABLE MATERIAL: The welding filter housing is made of PA and PP, with good toughness, corrosion resistance, scratch resistance, has a long service life.5. OTHER FUNCTIONS: The welding lens has low voltage alarm and grinding function, powered by solar panel and lithium battery, simple and practical.Specification:Item Type: Solar Welding LensFilter Size: Approx. 133 x 114 x 10mm / 5.2 x 4.5 x 0.4inMovable Window: Approx. 100 x 67mm / 3.9 x 2.6inLamp Shade: DIN4Dark Color: DIN5-DIN9, DIN9-DIN13Blackout Ear Adjustment Method: External control, stepless adjustmentDelay Time: 0.1-1.0S, stepless adjustmentPower Supply: Solar panel and lithium batteryLithium Battery Rated Capacity: 2 x CR2450 1200mAH (built in battery)Working Temperature: -5 to 55Welding Sensor: 4Cover Material: PA, PPProtection Grade Aginest UVB: DIN16Low Voltage Alarm: YesGrinding Function: YesOptical Grade: 1/2/1/2.Package List:1 x Solar Welding Lens