Auto Darkening Welding Lens for 2" x 4 1/4" x 0.2" Welding Helmets | Fixed Shade Auto-Darkening Filter Replacement with True Color Technology | Battery-Free Instant Response | Fits Mask 2x4 1/4 Hoods

View Area: 98 x 35mm/3.86" x 1.38" Cartridge Size: 108 x 50.8 x 5mm/4.25" x 2.0" x 0.2" Weight: 1 Ounce Light Shade: 2.5/Dark State: Shade 11 Optical Rating: 1/1/1/2 Sensors: 2 Independent Wide Range Photo Sensors Solar Power, No Need To Change Battery, Completely Automatic, No Switches Or Buttons To Turn On

• Fits most 2" x 4 1/4" welding hoods.
• Press the “SET” key to select from three functions: auto-darkening, Grind, and Fix Shade.
• When selecting auto-darkening or Grind, the corresponding LED lights will light up.
• When selecting Fix Shade function, the screen will darken. After 30 minutes, ADF will return to auto-darkening function. In Fix Shade function, ADF will also return to auto-darkening function after entering a dark environment for a few minutes.
• High-definition lenses can block or absorb more than 99.99% of infrared and ultraviolet rays, which allows us to easily carry out various welding work.
• Its Light Shade state is 2.5, which allows us to clearly observe the working area.
• Two wide range photo sensors are built in with higher sensitivity, which enables the lens to detect an arc strike and trigger the LCD into its dark shade in less than 0.5 milliseconds.
• The battery does not need to be replaced. Every time you strike an arc the solar panels will charge the lens right back up!