This Siegen By Sealey Auto Darkening Welding Helmet features infinitely adjustable shade control between 9-13. It complies with BS EN 379, BS EN 175 and DIN standards. The helmet offers fully automatic switching from light to dark on striking an arc, with shade selected by a rotary knob on the side. It also includes a grinding function, allowing you to grind without removing the mask. Powered by a solar panel, no batteries are required. The helmet is equipped with sensitivity and delay controls for switching from light to dark. Its contoured design includes an adjustable headband for added comfort. Suitable for MIG, TIG, and arc welding.