Special thanks to ArcOne for this post. - ArcOne® has completely changed the expectation level for performance in welding helmets with the all new iDF (Intelligent Darkening Filter) combining both hardware and software to create the most advanced, innovative product to come along in a quarter of a century. Developed from the groud up with feedback from welders, theiDF48 and iDF81 exceeds all expectation levels. Eight unique memory settings customize each helmet (in auto-mode) for each user creating a personal product for every welder. Available in the ultra-modern Vision® helmet or the racing-inspired Python® in viewing areas large and Xtreme®. With an astonishing clear light state of 3...