... marked *Switching set for less than 20Amps TIG welding. Auto darkening Welding Helmet-CE marked1),Filter size: 110 x 90mm2),Viewing window ... Lithium cells 9),Switching set for less than 20Amps TIG welding.10)Suitable for ARC,TIG,MIG,Spot,Micro,Wire,AC ... ,DC,and Plasma Welders and Plasma Cutters.11),Working temperature: -5degree~+55degree12),Shell material ...