Auto darkening welding helmet emtop

APPAREILS ET OUTILS DE CHANTIER : CARACTERISTIQUE Optical rating?1/1/1/1 The biggest view area?100 x 67 mm Sensors?4 Light shade?DIN 3 Dark shade? DIN 5-9 / 9-13 UV/lR protection? up to DlN 16 Switch time (Light to dark)? <0.04ms Shade control?inside & stepless Sensitivity control?inside & stepless Delay control (Dark to light)?inside & stepless, 0.15-0.80s TlG amps rated??2 amps Grind mode?yes, inside Material of helmet: nylon Weight?560g±5% Operating temperature? -5? (23°F)- +55? (131°F) Storing temperature? -20? (-4°F)- +70? (158°F) Power supply: solar panel & replaceable lithium batteries 2pcs*CR2032 Packed by color box