and high quality This is high quality Solar Auto Darkening Welding Lens Filter,with solar charge function and full automatic ON/OFF,very convenient and efficient It can shade automatically in welding states and filter out the light You will have a good protection with it at working and precent occupational disease If you want to get a effective and safety environment, It Fits all standard welding helmet window opening Frame set size: 108mmX51mmX5.5mm Window size:90mmX32mm Bright color level: DIN3 Dark color grade: DIN11 Dark color adjustment : No Dimming response time: 5/10000S Sensitivity control adjustment: Yes Recovery time: 0.2S Power supply: solar + lithium battery Rated capacity of lithium battery: 60mAh Working temperature: -20 degrees Celsius ~ 65 degrees Celsius Arc welding sensor: 2 pcs Infrared/UV protection level: DIN16 Self-test function: No Low voltage alarm function: No Polishing function: No Cutting function: No With LED light: No Darkness range: not adjustable Solar automatic darkening welding filter suitable for argon arc welding/mm/arc/mig machines Colour:Photo Color Material:PA/PP Package Contents: 2x Welding 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.