Optimatic 45 welding helmet offers advanced eye protection thanks to its automatic filter with 1/1/1/2 optical quality and din 4/9-13 range. 89 x 39 mm field of view and 2 high-precision arc sensors. responds in 1/25,000 s to luminosity changes guaranteeing safety in mma, mig/mag and tig processes. full head protection. solar charge and replaceable cr2032 battery (battery included). lightweight design, ergonomic harness with 3 support points. includes 1 internal and 1 external protector. standards: (eu) 2016/425 - en175:1997 - en379:2003+a1:2009. filter dimensions: 100 x 90 x 10 mm