?Note on 2014-7-30th :<br> This Auto Darkening Welding Helmet has Upgrade the lens (Lens style can look in : SKU143936 )from now on｣ｬ<br> which is not only suit for &amp;quot;Argon Arc Welding&amp;quot;｣ｬ but also can perfect use for Electrical Welding work. The upgraded lens will bring you the full range of protection !!! Description : <br>Auto Darkening Solar welders Welding Helmet Mask with Grinding Function<br>Ideal for ARC\/MIG\/TIG\/Stick WeldingCE Marked :   EN : 175\/379 &amp;ndash; CSA : Z94.3 &amp;ndash; ANSI : Z87.1Grinding Mode : Externally Controlled - Sets Lens in Permanent Light Shade<br>Viewing Windows : 90 &amp;times; 40mm.Response Time : 0.15ms - 0.2ms.Retention time : 0.4ms - 0.8ms.Delay time : 0.1S - 1.2SUltraviolet Protection : &amp;lt; 0.0003%(313nm-365nm).Infrared Protection : &amp;lt; 0.027%(780- 1300nm)&amp;lt;0.085%(130nm-2000nm).<br>Power : Lithium Battery Powered with Solar Back up.Operation temperature : - 10\u2103 - 65\u2103.Cartridge Size : 110mmx 90mmx 9mm.Light State : DIN4Dark State : DIN9 - 13Battery Type : CR 2450PC Size : 47 x 100 x 0.8mmSensitivity Control : Knob AdjustableSensors : 2<br>Package included : <br>1 x Auto Darkening Welding Helmet1 x Plastic Protection Plate1 x User Mannual<br>Details pictures :