Features 1、Arc Sensor Probe: The welding protective lens adopts arc sensor probe, which has high sensitivity, automatically darkens, has good protection. 2、Clear LCD Screen: The LCD screen has high definition, wide field of view, can see a wider range of base metals, very clear. 3、2 Power Supply: This welding protective lens can be powered by solar energy or lithium battery, which is very convenient. 4、High Strength PP Material: The protective lens is made of high strength PP material, will not be damaged easily, has good durability. 5、Good Protection: The welding lens can prevent glaring, visual fatigue, has nature colour, can resistant to UV and IR greatly, no damage to the welder eyes, the welder can work more safely and with confidence when welding. Specification Item Type: Solar Welding Lens Material: PP Photosensitive Tube: 2 UV IR Protection: 16 Len Box Size: Approx.110x90x9mm/4.3x3.5x0.4in Window Size: Approx.93x43mm/3.7x1.7in Dark State Color Grade: DIN9-13 Bright State Color Grade: DIN4 Power On or Off: Automatically Power Supply: Solar or Lithium battery Battery Specification: 1 x 3V CR2032 (battery not included) Response Time: <0.1ms (working temperature 23℃) Sensitivity: According to the welding current and welding machine, the knob can be adjusted steplessly on the filter Package List 1 x Solar Welding Lens