-class variable light lenses, 3 levels of darkness can be easily adjusted, no charging required. Adjustable darkness variable light screen, 108x50x5mm standard size, A-type lenses are dark green, B-type restores the Solar panel: Solar panel design, more convenient to use without charging. High light transmittance: good light transmittance, clear vision, anti- light, eye protection High-sensitivity probe: Eye-perceived flash light change is fast and does not hurt the eyes 0.01 millisecond dimming saves eyes: Upgraded dimming lens quickly dims light in 0.1 milliseconds, compared to 0.25 milliseconds before, the sensitive lens has a clearer vision Effectively blocks harmful light: for Crystal layer + multi-layer polarizer + red reflection filter multiple protection to achieve anti-dazzling, clear vision and eye protection effects High-sensitivity probe: The photosensitive adjustment is upgraded to avoid frequent screen flashes and is strictly controlled. Once light is generated, it is immediately transmitted to the smart chip. Smart chip: The chip processes the light signal received by the high-sensitivity probe and controls the dimming screen through high-speed processing Product name: Solar auto-darkening lenses Type: -class Weight: 80g Size: 108 x 50 x 5mm Thickness: 5mm Opacity: 3-levels of adjustable darkness Power supply : solar power, no charging required Applicable work: electric welding, welding, gas shielded welding and other welding work. Main functions: When light is generated during welding operations, it can automatically adjust the darkness to protect your eyes and automatically restore the brightness after welding is completed. Color: As Shown Material: LCD Photosensitive Lens Package Contents: 1 * darkening lens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.