New Auto-Darkening Welding Helmet Filter size: 110 x 90 x9mm Viewing window Size: 91x 40mm Working temperature: -5℃~+55℃ Light Shade: DIN3 Dark Shade Option: DIN9-DIN13 Shade knob: out Switching time: 1/10,000s Recovery time: 0.6s Eye protection: EN379 UV/IR Protection: EN169 Face protection: EN175 Power source: Solar cell+Lithium cells Auto power on/off: Full automatic Net Weight: 420g Extra functions: Small current less 20A welding Color option : Red, Blue, Black,Sliver,Orange