●Rechargeable Li-Battery Power the Fan & LED

●1/1/1/1 Highest Optical Class

●1/25,000 sec. Fast Switching Speed

●Shade Range 5-9/9-13 for More Welding Applications

●LED Lighting, Up to 5 hours of work

●Fan cooling, Up to 40 hours of work

●Premium Arc Sensors：This product builds four arc sensors inside, each sensor can work independently and detect welding arcs easily.The arc sensor focuses on the welding arcs without any interference from surroundings.

●Shade/Sensitivity/Delay Time Stepless Adjustment：Knob design with clear interface, you can easily adjust control knob to achieve shade, delay time from 0.1 to 1 seconds, sensitivity from low to high level.

●Shade Range 5-9/9-13：For most welding/cutting applications, also including grinding mode.

LED Lighting：In case of low ambient light, the welding helmet can automatically turn on the LED light.

Fan cooling：When you feel hot, you can turn on the fan to dissipate heat to improve comfort.