This auto-darkening welding helmet instantly switches on when the arc is struck and rapidly changes to 9-13 shade level. The dark shade, sensitivity and delay time are adjustable using control knobs. The helmet is powered by a solar cell and a lithium-ion battery (replaceable). The 92.5 x 42.5mm viewing area provides good visibility of the weld zone. It is suitable for TIG, MIG and arc welding, plasma cutting and also grinding. The comfortable headband is adjustable using the knob to enable an optimal fit.