-Adjustable TIG sensitivity switch for maximum TIG welding versatility-Powered by solar cell plus internal Lithium battery for maximum performance-Light shade state DIN 4, dark state shade DIN 9 - 13 (variable)-Super fast 1/25,000 second light to dark and 0.6 second dark to light response times-Large viewing area measuring 98 x 40mm-Extra comfortable and lightweight - weighs just 420g
