Safety helmets

Big Viewing Area:98?43mm Optical Class:1 / 2 / 1 / 3 Light State:DIN 4 Dark State:Variable shade, 9,10,11,12,13(9-13) Arc Sensor:2 Grinding Function :YES Low Volume Alarm:YES ADF self-check:YES Shade Control:External,Variable Power On/Off:Fully Automatic Sensitivity Control:Low ? High, by infinitely dial knob UV/IR Protection:DIN16 Power Supply:Solar cell.Battery change required2?CR2032 lithium battery Switching Time:1/25000S,from Light to Dark Dark to Light:0.1-1.0S by infinitely dial knob Low Amperage TIG:?5amps(DC),?5amps(AC), Operating Tep:-5?~+55? Storing Tep:-20?~+70? Packed by color box