field of view window: This welding lens has a field of view window, which provides clear and larger viewing angles and reduces eye fatigue. Solar panel: The solar panel is with the welding helmet battery, which can extend the life of the helmet. Highly sensitive: The solar automatic darkening welding lens adopts a sensitive arc sensor, which is stable and reliable. Fast response: This welding lens has a fast response time and provides better protection for welders. Prevent sexual diseases: This automatic filter can be well protected at work to prevent occupational diseases. Colour:black Material:PA Size:110 x 90mm Package Contents: 1 x welding helmet lens Only the above package content, other products are not included. Note: Light 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.