Description  :    BEAR Solar Power Auto Darkening Arc Tig Mig Grinding Welding Helmet Welders Mask     Ideal for ARC\/TIG\/MIG welding.  This product is widely used in shipbuilding ， petroleum， Architecture， steel， boiler-manufacture and so on.  Auto-Darkening welding Helmets are designed to protect the eyes and faces from spark， spatter， and harmful radiation under normal welding conditions.    High strong materials and fire retardant.  Sensitivity and delay time is adjustable.  Grinding and welding mode can be chosen.  Permanent UV\/IR protection.  High definition protective filter.    Specification :     Mask material : PP  Weight : 1 LBS  Light states : Shade DIN 4  Dark states : DIN9 - 13 free adjustable  Catridge Size :  96 x 48 x 6 mm  View Area : 93 x 43 mm  Response time(bright to dark) : <1\/30000 seconds (normal temperature conditions)  The turn time(dark to bright， adjustable) : 0.15s - 0.8s    Sensitivity(welding based on current size) : adjustable : low\/high  Style : Head-mounted  Type : Welding  Battery : lithium battery + solar cells  Uv protection : 16 levels  Working temperature : -5 C - 55 C (23 F - 131 F)  Storage temperature : -20 C - 70 C (-4 F - 158 F)               Package includes :     1 x Auto-Darkening Welding Helmet  1 x English User Manual.    Details pictures :