supply of auto darkening welding helmet for welder [auto darkening welding helmet for welders, specifications as follow: i) viewing area: 100 x 41mm (3.93 , auto darkening welding helmet for welders, specifications as follow: i) viewing area: 100 x 41mm (3.93 x 1.62) ii) cartridge size: 110 x 90 x 8mm (4.33x 3.54x 0.31) iii) uv/ir protection: perman ent din shade 16 iv) light state: din shade 4 v) dark state: din shade 9 to 13 variable vi) power supply: s olar cell with built-in battery vii) switching time: light to dark <1/30,000s viii) dark to light: 0.1 - 1.0s (int ernal variable) ix) operating temperature: -10 degree-c to +60 degree-c x) storage temperature: -20 degr ee-c to + 70 degree-c xi) helmet material: high impact polyamide nylon xii)total weight: 460 g approx xiii) minimum operating average: 10 amps [ warranty period: 30 months after the date of delivery ] ]