Description Auto Darkening welding filter is the spare part of welding helmet to protect your eyes and face from sparks, spatter, and harmful radiation under normal welding conditions. Auto-darkening Filter automatically changes from a clear state to a dark state when an arc is struck, and it returns to the clear state when welding stops. Features ♦ Expert welding filter ♦ Optical class : 1/1/1/1 or 1/1/1/2 ♦ USB Rechargeable ♦ Welding& Grinding& Cutting ♦ With standards of CE,ANSI,CSA,AS/NZS Products details About this item 1,It's a replacement filter part for 114*133 filter helmet. 2,Internal adjustment so that you can make customised compeletely shell decal 3,TrueColor Technology to ensure the clear view sight. 4,CE EN379 approval 5,Long lifetime with solar panel and over 500 times USB rechargeable 6,Large view sight to keep the efficient and safety work.